Can i drive with a p0402 code. If either P0171 or P0174 is appearing by itself, or both codes are stored, you have a problem that requires more detective work, and you must look beyond sensors and items size: mid-size I had a airaid intake, I sold it adn swaped it out with a stock 2004 intake off another 6 If the vehicle is equipped with a DPFE, then study that data during a test drive The bottom line here is you have a bad converter — unless the problem is The cost to diagnose the P0402 code is 1 #5 – Remove/Clean EGR Valve 10, 85k Caused by Excessive EGR Flow (Code P0402) on M2's by Terry Treiberg - terry@treiberg When I came out, and restarted the car, the Check Engine Light came on, My code scanner indicated a small leak in the emissions control system P0402 #2 · May 24, 2017 How to Fix P0440: Evaporative Emission Control System Malfunction Only show this user Answer (1 of 5): In modern cars plugged EGR or Stuck open EGR can throw a code This indicates that the three-way catalytic converters oxygen storage capacity is below a threshold considered acceptable Customer reply replied 1 year ago The thread title is misleading (P0402) where the tiny picture shows the actual problem is P0420 I dont know what could be throwing this code 2002 Outback H6 P0402 2002 Outback H6 P0402 Hoping I can get some advice I scanned it with the same P0402 code But many folks get … Follow these steps to clear the Cummins fault codes with a scanner: Close the doors and insert the key into the ignition When the computer sets a code P0402, it means that the EGR flow monitoring criteria has not been met I will have to drive it a little bit to see Then, right before swapping heads it started throwing both p0401 and p0402 codes at the same time Website Re: P0401 And P0402, 2001 I4 Camry by GAZZUZZ ( m ): 7:41pm On Jun 28, 2015 Displayed this code on scanning I also want to talk more about the … Trouble code P0405 indicates that the readings coming out of the exhaust gas recirculation (EGR) valve position sensor are incorrect So I took it to a local mechanic after work and they said it's the catalytic converter, code P0420 The vehicle acts like it is missing almost like it needs a tune up The EGR valve may not be opening due to a lack of vaccuum i did clean my egr less than 1k miles ago though Discussion Starter · #1 · May 17, 2012 I remember Havana Joe got codes P0402 and P04DE , his dealer did EGR recall job and reassembled tube wrong and loose , he had air leaks , caused CELS , after recitting tubes , no more codes I think that's why the light came on just as it warmed up previously However, this code also appears when the CCV sensor voltage is less than 2 P0402 EGR code Help The dealership mechanic just gave me a $3500 estimate to fix "most" of what's wrong Not having a CEL right away does not mean you necessarily fixed the problem U0001 High Speed CAN Communication Bus #2 Here are the most common causes: Sensor Issues – There are many sensors that the vehicles computer relies on to accurately operate the EGR system With a P0402, it is common for people to replace the … Now the car surges from around 500 rpm's to about 1000-1100 rpm's when you are in reverse or drive (slowing down, stopping) The information is sent to the powertrain control module P0402- EGR Issue A code P0402 most likely means one or more of the following has happened: The DPFE (differential pressure) sensor is faulty and needs to be replaced; There is a blockage in the EGR (most likely carbon buildup) The EGR valve is faulty; The EGR valve may not be opening due to a lack of vacuum The Code P04DB indicates that there’s something wrong with the CCV P0402 Exhaust Gas Recirculation Flow Excessive detected Discussion Starter · #1 · Jan 4, 2014 You wasted your money changing the catalytic converter Braiding on exhaust flex pipe torn, but can't find a break in the flex pipe transmission: automatic 3) Rattle sound underneath when climbing hills #2 – Visually Inspect All Related Wiring And Hoses you might see the P0401, P0402, and P0404 codes more often than other car owners All vehicles from 1996-newer sold in North America support this generic powertrain code A P0420 diagnostic trouble code is a "generic" fault code that is set when the Onboard Diagnostic II (OBD II) catalyst monitor detects a drop in converter efficiency No mods, just a 2011 F-350 beater farm truck There’s also a possibility you have a bad fuel tank pressure sensor Hey guys, I have a 2007 Accord 4dr 5sp LX with 123750 miles This has only occurred since this fault code appeared this If that’s the case, you’ll need to address the other codes first and take note of freeze frame data Ford models use a differential pressure sensor in the EGR system The coolant leakage stopped, but the CEL came on … If a condition exists which causes the Powertrain Control Module (PCM) to detect excessive Bank 1 HO2S #2 activity outside of an acceptable range for an extended period of time, the PCM will set the P0420 code climbhi67 · Registered This code will come up with a blanking plate or the EGR is stuck closed So I have a S&B intake with the dry filter, prefilter sock, and all the ports on the intake opened up It may be that the throttle valve doesn't open fully, the EGR valve doesn't fully close or the MAP sensor is clogged Initially I had a code of P0405 for dead egr valve No other codes were present at the time Depending on the reason for the code, the potential exists to set your engine on fire Your evaporative emission control system is an essential combination of fuel vapor hoses, a charcoal fuel vapor storage canister and computer-controlled purge and vent valves *This condition can cause low engine vacuum and thus can cause a less than expected MAP changes during the EGR flow test The first thing you should check if you have this code is the battery terminal connections This will clear any pending or currently active codes none P0402 is the "Exhaust Gas Recirculation Flow Excessive Flow Detected" code, and it's basically the opposite of a P0401 code By lmorris, July 22, 2019 in 6 The EGR monitoring criteria are a set of test values and are usually run during at least two different driving conditions—steady speed freeway driving and steady speed city driving I was getting ~27 and now I'm getting ~24 with no change in driving habit or length of drive 5 volts 01 - 1 As a result, if it's damaged, it might create a slew of problems with your vehicle Joined May 17, 2012 I'd recommend starting with the EGR gas temperature sensor if the engine is shaking or your Infiniti check engine light flashes, do not continue driving as this can cause severe damage to the engine and catalytic converter DTC P0402 unable to drive [Insignia] [08-17] Jump to Latest Follow When i checked for any codes with my Autel AL319 i had a pending code P0402 - exhaust Gas recirculation Flow Excessive Detected It covers Ford Transit Connect P0420 meaning, symptoms, causes, and possible solutions 7L Powerstroke So a … 14 P0116 P0116 - Coolant Temperature Signal - Plausibility Check whether fault code P0420 was the only code stored Tried to reset the lights using P0402: Exhaust gas recirculation However, with this standard, if the driver decides not to fix a fault code, they can drive around with an “environmental foul” until their next emissions test This is why many Ford owners ask why does the EGR valve get carbon build Continue Reading A week later, the car returned with the same code I get P2563, P0402, P0299 and B2AAA Note: The definition of code P0402 may be different depending … Cost of diagnosing the P0402 code As a result, the vehicle’s ECM has registered an emissions-related DTC (P0402) I bought a $25 scan tool, which plugs into the Answer (1 of 2): A large EVAP leak code such as a P0455 would not result from an EGR valve fault So to drive a gasser with the pre-cat O2 sensor malfunctioning will cause incorrect air/fuel mixture It usually takes between 10-50 miles for it to come back on Maybe the original(non-junkyard part) modulator works right #1 – Check For Additional Codes Folks, This post is for those who are fighting the “P0402” code 0 votes #14 · May 25, 2020 Check engine light on, code p0402, code p1411, does not … 2003 Elantra O2 - Bosch Part Number: 13461 But it always comes on driving at a steady speed In other words, it’s not removing harmful combustion byproducts from the exhaust 2018 3500 CTD CC Laramie, 385/930, Aisin, 4x4, 3 Save Share The biggest thing to realize is pinging can occur when this code is set This did not make sense as how can you have excess and insufficient flow at the same time After doing research it looks as if the MAF is used to measure egr and could possibly be dirty P0340 CMP P0400 EGR System P0402 EGRC/BPT Valve P0403 EGR Volume Control Valve Circuit P0420 TW If any of the following tips work, you can expect limp mode to return fairly quickly if the fault continues Again the vehicle returned with the P0402 code; at that time, I was out of ideas It is getting codes P0402 P1406 and was getting a Cat code, running the car at highways speeds for an hour cleared the cat code (he only drives 5 min each way to work and home pretty much) Strange thing is I can clear the code and not receive it again until I take it on a long drive One of the more common codes we see on the Subaru, is P0420 Catalytic Converter Efficiency Below Threshold then it came on and I ignored form many months - tried again so I can drive with legal plates Was able to shut car off and restart and get home without further problems The lady quoted me $745 OTD It will ONLY give this code if under load/driving while cold How to Fix a Code P0401 5)Restart Car and MIL joins Restricted Performance on the dash without any additional codes Rather, there could be something else in that system does that’s causing the oxygen sensors to appear faulty Pinging can lead to internal engine damage I am taking a more technical approach than normal to describing what happens when the code is set, as it is a very technical process that needs to occur to get real results, we don’t always replace Labor: 1 lol The latest code is the P0402 (EGR excessive flow) and we do not know what else I can do Joined Mar 23, 2018 Reply The “loose gas cap” message is a result of failures relating to a large Evaporative Emissions leak Your engine management light stays on Symptoms Of Getting The P04DB Code On A 6 This code is very similar to the P0455 code, expect this Is It Safe to Drive A Vehicle With a P0402 Code? The sudden occurrence of the P0402 code is undoubtedly one of the severe issues because it can affect the vehicle’s drivability 00749 Ventilation Flap C0530 Insufficient Pressure regulation C 4L and code is excessive EGR flow detected; If your truck is still idling ok the valve is not stuck open I need help i have given up trying to fix the problem with my 1999 Mazda Protege The test criteria during EGR operation include: If the problem may cause emissions to exceed 1 This is a common first step in many diagnosis processes unrelated to the MAF sensor 4,753 Posts May 12, 2011 none Code P0402 indicates that your car computer has detected excessive EGR 4/5 (9,225 Views You could try the experiment On some automobiles these issues set the P0440 code The sensors should go rich in response to the propane Fourth Step If all electrical values are within the manufacturer’s specified ranges and the code persists, then you can suspect a defective throttle actuator or presence of carbon deposits that could prevent or Excursion - King of SUVs - P0402 code The test criteria during EGR operation include: P0402= EGR Flow Excessive If the engine control unit recognizes a leak there, it will be stored as a P0442 code I bought an OBD code reader and it gave me an 0400 EGR code net article (though it doesn't include cleaning Cel p0402: User Name: Remember Me? Password: Forgot Password? Join Us! FRF Store: Register: Ranger Pictures: Members List: Social Groups Join Date: Jul 2011 This time he replaced all the vacuum hoses that ran between the base of the EGR valve and the EGR boost sensor Yes, you can drive without a catalytic converter – The first automobiles were designed to run without a converter Hey guys, the dreaded lightning bolt and associated codes ugh! I really recommend to anyone experiencing this to first try the swirl motor resistor mod at least to eliminate that possibility The engine is running more rich than it should kakameks: Hi guys, My 2001 toyota camry Once the code P0402 has been retrieved with a scan tool, the freeze frame data should be Insuffcient EGR Flow (P0402) Problem Solved P0402 code ONLY if cold here! I found tons of information on the P0401 code but not much on P0402 (excessive flow) With the ignition on (vehicle not running) clear fault codes using AlfaOBD app Owners report repeat P0401 and P0402 codes from the differential pressure feedback EGR sensor (DPFE) The EGR monitor looks at the DPF EGR signal at idle and compares it to the stored signal measured during key ON and engine OFF com Take it for a test drive P0400: EGR Valve Stuck You should see a 0405 code and that's normal for being unplugged but if the 0402 code … Joined Oct 9, 2015 4) Uncertain but also feeling it is … P0402 causes and possible cures listed below It SHOULD see the difference as a reduction in ammount measured by the MAF Verdict: The EGR valve was malfunctioning (most likely stuck open) and allowing exhaust gasses to enter the intake in unpredictable amounts 4 Posts 5" tube resolves a lot of the P0402 codes - Where is this 1 has the turbo actuator rebuilt and reinstalled Then my CEL came on You can see for yourself Depending on the engine and driving conditions, the ECΜ will control the EGR Solenoid which will When the computer sets a code P0402, it means that the EGR flow monitoring criteria has not been met The Solara is a good choice I used to have all European cars (got tired of the frequent nd expensive repairs) so I'm still amazed at When the ECU sends a command to open the EGR valve then the engine will SUCK a percentage of air from the exaust and LESS air from the airbox I will get a P0402 if I don’t clean the prefilter every 10k miles when changing the oil And, yes, the car will fail the MOT The same P0402 and P1411 11-05-2005, 11:22 PM Most of the DTC show symptoms of their arrival & the DTC P04DB isn’t an Fix Code P0420 Fix Code P0420 With this code, the voltage levels coming from the sensor are lower than they should be Update: The 2nd time I went in with the P04DB code they said there was a software update about that (which they flashed at no charge cab, w/ 4 Didn't find much on this code directly related to the Duramax but I read EGR and think $$ When I checked the throttle body it was covered with quite a lot build-ups, so I cleaned it and ran the Have my used S60 for a month now, and decided to pour a bottle of Techron Fuel System Cleaner in with a tank of Mid-Grade last week G It is $70 at Autozone 00750 Fault Lamp Circuit You’ll need to check if there are other codes using a scanning tool codes I am getting are p2359-001 (2359-001) and p2944 (2944) as well as some RAC DIAGNOSTIC SYSTEM Maureent #2 · Apr 16, 2021 6L (LML/L5P) & 6 00748 Rear Battery Temperature Sensor -G53 P0500 is a speed sensor that I would disregard for now The other code will be much more expensive and with the EGR will probably cost about the same as the value of the truck · He claims it has an overheating problem and requires a new radiator/fan assembly Says I have a P0402 and a P0404 One of the most reliable cars ever made #5 · Jun 18, 2005 If your vehicle cranks but won’t start, there is … Hey everyone, But the check engine light came back on again this past Friday, 7/31/20 at 175,700 miles OEM exhaust, no mods In some cases, driving with a faulty catalytic converter can damage other parts of the engine P226300 Boost Pressure Deviates Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 2 Here is the low down on the P0402 fault code #4 – Verify EGR Temperature Sensor Operation It could even be a bad ECM The exhaust gas recirculation valve may not open due to lack of vacuum Post Get a CEL light when trying to get onto freeway at speed or throttling down to pass got a check engine light but the car was running fine BUT the catalyst will not process exhaust correctly with the errant exhaust The video feed is one-way, so the agent cannot see the customer, but can hear and respond to questions I keep getting a P0402 code Re: P0402 EGR excessive! It might be something else but the most common cause, by far, would be a failed Differential Pressure Feedback EGR (DPFE) sensor Check Engine Light: This won’t happen in all instances of EGR failure but many times the 6 18 Posts Auto, 2 In the case that the catalytic converter is totally plugged Engine management light is turned on and a coil symbol is flashing in the dash When first start in the morning engine cold,i can hear the engine hunting before settling to normal 800 rpm idle This valve might get stuck opened 0 power stroke diesel July 22, 2019 Faulty Catalytic Converter I know on a gasser the pre-cat O2 sensor controls the air/fuel mixture, and the post cat measures the converter efficiency Additionally, if you have a vehicle with multiple catalytic converters, you can destroy them all and end up with a much larger repair bill $40 on Amazon, I didn't want to wait for shipping to do it this weekend Only show this user Of note, this appeared during normal driving, not following any maintenance action e C0B81 EGR Rate Control - Control Deviation im also getting the u0100 code which is ecm/pcm lost communication 4 6 TDI CAYC 2009 Yes: P0402: EGR Flow Excessive Detected: The EGR valve is stuck open or is jamming (due to carbon build up or possibly a bent shaft Hi to all, thought i would post an update ref my VCDS readings on the P0402 fault code 5L - 70 (95) DTC: 279800,Active cooling roll, diagnosis acknowledgment: open appropriation for quick identification 1996 Subaru Legacy AWD wagon, manual transmission It comes on while driving within 2-3 miles Depending on the engine and driving conditions, the ECΜ will control the EGR Solenoid which will operate the EGR The cost of diagnosing the P0402 FORD code is 1 A P0420 code means your catalytic converter has failed an efficiency test The OBD II system monitors catalyst efficiency by comparing the Discussion Starter · #1 · Oct 25, 2013 5" tube they speak of? 1500 miles Info and Symptoms: 99K miles Mechanical fault I have a 2000 Altima with 96,000 miles (MIL did not drive much) Any fix for this problem or is it bad for the truck Bought FCR and cleared fault, … What is code 15 on a 1991 Chevy s-10? problem with the coolant sensor check the connection on the sensor reset your OBD I code if that don't work replace the coolant sensor Explorer engine oil Oxygen sensors are only a part of a greater system, meaning if the p0420 code (or p0141, or p0135) is thrown, that doesn’t necessarily indicate the oxygen sensors need replacement The EGR valve has a return to closed spring that can become weak/worn and cause the valve to actually open under exhaust backpressure but in older cars it may not throw code Both problems can be fixed with a can of sensor-safe intake cleaner as described in the miata I've replaced the EGR valve and DPFE sensor Yesterday morning, the check engine light came on while driving to work The dealer diagosed a faulty catalytic converter given a P0402 diagnostic code and didn’t think the P1078 code for the intake manifold a problem This will help your mechanic verify the diagnosis and proceed from there Seems fairly simple to fix The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type After a week of driving with the light on we brought the car to the dealer to have it checked PO400 or P0402, EGRC-BPT My driving is mostly long highway trips and hardly any stop and go driving at all - hopefully that helps I have read where it could be a couple of other problems such as turbo plumbing or arm actuator P0171 and P0174 Codes – Don’t change an Oxygen Sensor Before Reading This Engine Control Module (ECM) detects a fault with the EGR (Exhaust Gas Recirculation) valve, resulting in OBD-II code P0402 Often a P040x code is caused by a blockage in the EGR system and is not caused by a … The cost of diagnosing the P0402 code is 1 Truck ran great on road trip - ran only reputable diesel/DEF and used Power This is a list of all the codes that showed up: P115D Mass or Volume Air Flow 'A' Too High I noticed that the engine when idling was rougher than Problems started this summer with dash engine light and code P0401 appeared on a country lane at low speed going into a corner so it would be low airflow going in to the engine as it wasn’t ‘working’ #4 – Test Vacuum Actuated EGR Valve 5 Now it still has the p0402 code and when i drive it and after it warms up it goes into limp mode and pulls code p0245 I'm getting 50-80 miles more to a tank now depending on how I drive 11-23-2005, 10:41 PM The cost of diagnosing the P0402 FORD code is 1 The EVAP emission system is a sealed fuel gas system, which is then going through your car engine because of environmental purposes After driving several trips with the light on, however, the light turns off by itself on startup, but another scan indicates the code is still Everything was okay for about 30 min or so They are telling my that for the P0402 code I need a new EGR and EGR module, which with labor is about $400 - $500 to repair 6 tdi, 90k miles Yes, you may be able to drive your car with a P0420 code, but it is not advisable P0402 is a diagnostic trouble code (DTC) for "Exhaust Gas Recirculation Flow Excessive Detected" 6 L, V4 - 93,000 + mi Whitevanman has never heard of the EGR valve problem because the way he drives keeps the EGR valve opening and closing regularly to keep it clear #1 sure enough, the code was in there twice I reset it a few times but it kept coming back Exhaust leak Since the EGR sensor on the '99 Avalon is right on top of the EGR diaphragm and easy to test, I'll be doing that first to see if it is in spec #2 – Clear the Code You can try loosening the header exhaust pipe and see if this improves power I had the PCV valve changed for the first time and had a diagnosis completed for the P0402 Check the egr solenoid P0402 - Exhaust Gas Recirculation Flow Excessive Detected Don't trust the mechanic giving you a code Code P0420 Catalyst operating below minimum threshold Clear the codes after this step, and operate the vehicle for one drive cycle before scanning again to see if the code comes back #5 you could never repair it and the car would last 100,000 miles - i've seen it cou Meaning Messages #1 – Restart the Car Sorry about that, I get really fed-up with some of the people here and sometimes have to leave for a while 2015-2019 Silverado HD & Sierra HD What Does Honda Code P0420 Mean? Honda P0420 definition: Catalyst system efficiency below threshold (Bank 1); Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage The car occasionally goes into limp mode, with Anti-pollution and ESP fault messages on the screen The EGR position sensor monitors the position of the EGR valve Yesterday, was pulling my loaded trailer through the hills P0402: Exhaust Gas Recirculation Flow Excessive Detected In particular, that code refers to the PCM’s failure to control fuel trims to keep the air/fuel ratio correct Other members have found that corrosion at the terminals caused problems with the voltage read by the A/F and O2 sensors The part is only about 20 bucks so if … The check engine light on our 2005 Honda CRV (146,000 miles) came on and stayed on Reaction score Sweet P0108 was already present, I've been living with that one for a few weeks and I'm guessing the wastegate is jammed on the turbo 0 powerstroke, w/ a like new filter Keep in mind that DTC’s (Diagnostic Trouble Codes) are just to point you in the right direction and there may be numerous other components Hello, my name is Haley and I own a 2001 first generation Prius, with about 150,000 miles on it Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage P0402 is an OBDII trouble code that'll pop up in the Ford F150 I've now acquired a Chinese Lexia copy, and wrestled with the software until it communicates happily with my car Grounding wire near tailpipes is broken I've got a 2001 Altima, 231k miles, runs great but the P0402 is pissing me off com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded It's an expensive fix so you want to make sure your vehicle really needs a new converter before you replace it So about a month ago a CEL popped on and code P0402 came on with pending codes p0046 and p0047 To get the P0402 code to show up, one of the following things was happening: - The EGR was not opening/closing, maybe a leaky diaphragm in the EGR itself P0402 ACTIVE Ignition on Exhaust gas recirculation valve defective Theoretically you can drive for a few weeks or even months with a broken MAF sensor The same section in the manual warns that other codes such as P0105 and P0402 could trigger a false P0401 and should be dealt with first If there's a problem in the transmission, the vehicle might be operating in 'limp mode It feeds exhaust gas in at times when the engine can cope with it - when its hot and at high revs In your case, the P0420 code stands for “Catalyst System Efficiency Below Threshold (Bank 1) Test it (see the doc) Went a few The codes were P0402 and P0401 If anyone can give me any pointers on this i would be very grateful These are things that cause P0402 are: Excessive Vacuum signal or Electrical signal to the EGR Valve The EGR Valve is defective and is opening too far or not properly closing Malfunctioning EGR Vacuum supply solenoid Lack of proper EGR system feedback to the computer from the: Manifold Absolute Pressure Sensor (MAP) Differential EGR Pressure Feedback Sensor (DPFE) … P0402 code on 1998 Accord is related to low performance of the O2 sensor/Cat converter I get pretty good fuel economy This is the case because the converter is in charge of converting toxic emissions into less harmful gases I had a tech tell me my EGR ports could be partially blocked which results in the exessive flow to the others - Vehicle is a 2005 6 now cranks but will not start low pressure fuel triggers the not low fuel rail pre Diagnosing what is causing the P0402 code in the F250 is typically not very tricky (Or maybe used your own OBD scanner to extract the car faults) I took it to Autozone to again read the code like last time and sure enough it came back as the same one, P0420 I bought it used via Carvana in Aug 2018 - The EGR was not opening/closing because of some other vacuum leak Posts: 287 (2 trip detection logic) (2) EGR valve is always open (2 trip detection logic) Probable Trouble Area (s): - EGR valve stuck open Replacing a broken catalyst in the exhaust Usually this means your catalytic converter needs to be replaced or there is a problem with your O2 (oxygen) sensors Ok driving around today doing errands, saw a cool blue ranger, had to step on the gas to beat a red light and catch up to it It drive like a car very smooth has the p0404 code- egr control 0l v-6, AT and 146,000 miles, and I keep getting the code P0402 00747 Front Battery Temperature Sensor -G52 After clearing the engine and making multiple road tests, your mechanic will check if the codes come back 2 If there is one, there would likely be black soot in that area I pulled the maf and cleaned it and put it back in and cleared the code engine not running In some parts lists, the DPFE may be incorrectly referred to as the "EGR position sensor" or some other words to that effect You’ll likely immediately get a check engine light and a code for the MAF sensor or for the o2 sensor There is a blockage in the EGR (most likely carbon buildup) The EGR valve is faulty I found that there is a P0402 fault code stored These components capture, store and recycle fuel vapors from the fuel tank and fuel delivery system The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type Please get this code repaired as soon as possible A code P0402 most likely means one or more of the following has happened: The DPFE (differential pressure) sensor is faulty and needs to be replaced As a test, purposely introduce a vacuum leak on an OBD II car with no codes Most auto repair shops charge between $75 and $150 per hour 0L (L96/LC8) Tech You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot I took it to the local Honda Dealership and was told that they would clear the CEL Posts: 12,248 Cel p0402 Exhaust gas recirculation clogged (most likely carbon build-up) If it does, I would say the egr valve is sticking open I am dealing with this P0402 that I cannot seem to get rid of Jan 20, 2007 Sometimes simply turning the car off and back on again will exit limp mode Also consider that an MAF check engine code can be due to a vacuum leak; i This results in an overly-rich mixture of oxygen in the fuel/air mix and - as a result - higher engine What repairs can fix the P0402 code? Replacing the stuck open EGR valve The exhaust leak is … I found this complete list of OBD II codes for BMW's If your car's check engine light is on, get that code read in case it's a P0420 After getting the car up to temperature and varifying that the thermostat was working properly, fuel trim was where it needed to be, and all else checked out good, the wave form from the O2 sensor shows a bad CAT 42, STAYING STOCK 2014 3500 CTD CC Laramie, 385/850, Aisin, 4x4, 4 I cleared the code at the shop and and it was good to go; no difference in performance, so thought maybe just a fluke Basically the EGR valve makes the engine eat its own sh*t Problems with the camshaft phaser, which might get stuck in the retarded position All you have to do is listen to your vehicle A volt reading that is over 2 volts may not set a P0402 code, but could can cause some of the previously mentioned problems or codes When one of them goes bad, they can cause P0402 will have too much O2 and the richening will drive the OK injector cylinders rivh and the O2 level average will be fine as far as O2 sensor can read Try to drive with this in mind, placing yourself in a lane with a shoulder or taking less traveled roads It can be disconnected, or the CCV sensor/filter is faulty 2 weeks ago I put my 4in down pipe, 5in turbo back, 8in tip center dunk over the axle Right - so for the last few days when I start driving in the morning I get judder/hesitation under 2000rpm this only happens for say 5/10 mins and then it's back to normal MIL WITH DTC P0400, P0402, ROUGH IDLE, DRIVABILITY INCIDENTS, DIFFICULTY SETTING EGR SRT APPLIED VEHICLES: 1998 – 2000 Frontier (D22) with KA24 engine 2000 Xterra (WD22) with KA24 engine APPLIED ENGINE: KA24DE 4 cylinder engine IF YOU CONFIRM: • DTC P0400 (EGR) or P0402 (EGRC-BPT Valve) is stored in the ECM, and/or A Catalytic Converter Can Be Driven Indefinitely You will need to reset the computer in this case I plugged in my OBD reader and it threw up three codes: P0234 - Turbocharger Overboost Condition; P0236 - Turbocharger Boost Sensor A Circuit Range / Performance; P0402 - Exhaust Gas Re-circulation Excessive Detected; In traditional fashion, I tried turning it off and on again with no luck, although the idle was a bit rougher than usual when it A faulty fuel pump will give away some signs that even an untrained mechanic can notice and diagnose Then, what causes excessive EGR flow? Code P0402 is I can not notice any difference with the way the truck performed According to the FSM, if the MAP sensor tube is plugged, partially plugged, or the sealing grommet is leaking, this DTC (P0402) may will show up #3 – Check For Sufficient Vacuum/Voltage sensor value is high during EGR cut–off when engine is cold and vacuum is applied to port E Diagnostic Trouble Code Detecting Conditions: (1) EGR gas temp but i 22 Instead of wasting money on unneeded parts (like some people do), I tested the DPFE sensor, the EGR solenoid DTC P0402 Exhaust Gas Recirculation Flow Excessive Detected #3 The P0402 code will keep coming back until the intake manifold has been cleaned However, it recently threw a P2271 code, Bank1 sensor 2 O2 sensor stuck rich I need help with a F250 code p0402 DTC: 255B00,The exhaust gas return valve, position control: too much valve closed / positive change Excerpt - The code P0402 is often not a problem with the EGR valve itself Ive had the up and downstream 02 sensors replaced, ive had the cat replaced and ive replaced the turbo A 2413 code came up in the ERG system performance You should find your car running as good, and hopefully better than before you started My initial thoughts are this is the air intake flaps fluctuating altering amount of … Hello, I am having a problem with Skoda Superb 2011 Greenline 1 For more info go here That's because of the leak When you receive aP0420 code it means your catalytic converter is not operating at maximum efficiency Possible causes of this could be a restriction in the exhaust system or non original equipment manufacture (OEM) exhaust parts Seems to stumble now and then also The check engine light, ATF temperature light are yellow and yellow means proceed with caution A P0420 code will most likely appear if your catalytic converter is malfunctioning Sensor Characteristics I did reserch this site and P0420 (underperforming cat) may be culprit for my current conditions: 1) Bad / poor fuel mileage Cycle the key five times from “off” to “run” without actually cranking the engine A drivability symptom of low power and black smoke is a good indication of a stuck open egr valve 2006 Ford F-250 Diesel - Answered by a verified Ford Mechanic Does it run bad if it does a quick check with the MAF sensor is too unplug it and drive the vehicle if it drives better it is possible a faulty MAF sensor C0737 Camshaft timing is over-retarded Lets break down the different colors and what they each mean Sometimes it’s a sign of an errant valve that’s allowing too much exhaust gas to cycle through the engine and intake manifold Was told that it might just be the DPFE Sensor Lafayette, Louisiana There had been reports of the vacuum hoses and pipes getting plugged with carbon The cost to diagnose the P0402 FORD code is 1 P0100: Mass Air Flow Sensor Circuit Low Input Depending on the engine and driving conditions, the ECΜ will control the EGR Solenoid which will operate the P0402 EGR system excessive flow detected at idle How do I fix code P0402? What repairs can fix the P0402 code? Replacing the stuck open EGR valve Most auto repairs shops charge between $75 and $150 per hour Joined Dec 27, 2008 What is a p0402 code? P0402 is an OBD-II generic code that the engine control module (ECM) has detected indicating the engine exhaust gas recirculation (EGR) valve is flowing too much recirculated exhaust gases when it is commanded to open the flow of gases into the intake manifold When going up hills even slight hills the car has a hard time making it up While driving the car barely makes it over 2000rpm, it also jerks back and sometimes grayish/white smoke comes from the exhaust Location: Silves, Portugal The P0402 code most likely means that one or more of the following events have occurred: The DPFE (Differential Pressure) sensor is defective and needs to be replaced Setp2: Examine the Wires and Coils Peugeot 206 P0402 Engine Trouble Code Experts, installed a Banks CAI on my new 2022 megacab last week, and it threw a P0402 code for excessive flow at the EGR The P0302 code means that the cylinder 2 is misfiring or is randomly misfiring As you can see, most of the prescribed diagnostic tests have to do with electrical faults, and the most detailed testing requires a Toyota handheld tester In AlfaOBD app, select "DPF Regeneration Enabling" and select START Some of these sensors include the EVP, DPFE, and MAP sensors You will see that there is a drop in performance of the catalytic converter It was not until emissions concerns came up in the mid 1970s that the idea of equipping every automobile with an emissions control device You need to clarify which engine you have My engine light came on and I had autozone scan it Possibilties are the EGR valve is sticking open or not seating correctly While driving the car over all the car has lost a lot of acceleration/power (barely get over 2000rpm) Now yesterday on my way home from the hardware store my cruise control shut off and my Check Engine Light popped on 2cc 4 cylinder Technical Description Exhaust Gas Recirculation Flow (EGR) Excessive Detected To wit: It's throwing a P0402 code and P0171 code So your car’s CEL (always check Engine Light) is on and also you had the codes scanned at a local parts shop then a week later 85 degrees out on the highway it goes limp mode, i restart it and get it home, then codes p0299, p0402, p0046, p0047, pop up so i knew boost pressure was bad and looked into it and saw the actuator was Gas Cap Code or any other videos explaining about 02 sensors, fuel trims, catalytic converter, etc 0 211 Posts Feb 21, 2022 2001 Altima GXE & p0402 I noticed my 2001 F-150 (4 -The EVIC should now display something similar to Continue driving at My engine light keeps coming on and the code that always comes up is EGR P0402 P0402 Exhaust Gas Recirculation Flow Excessive Detected P2772 Four Wheel Drive (4WD) Low Switch Circuit Range/Performance P2773 Four Wheel Drive (4WD) Low Switch Circuit Low Re: P0402 Excessive EGR output Engine The dealer also stated that the … Only show this user P0030 O2 SENSOR 1/1 HEATER CIRCUIT OPEN Since our EGR valves uses a position sensor within the EGR valve body for feedback to the ECM, the ECM compares the feedback value against the MAP signal and data map when I drive on the highway doing 100 mph, the Rpm go up One on the hard line on top of the engine going from the Vaccum Tree to a T on the other side, and a new PCV valve, line and elbow by SniperZoz » Thu Oct 07, 2010 4:56 pm Code 2 is P0402 (most commonly, a bad catalytic converter) as seen here: I just took delivery of this car on Sunday The maintenance minder code for changing spark plugs (code 4) hasn't come up yet stays open never cutting flow of vacuum to egr valve, ie egr is getting vacuum and flowing all the time A P0402 means there is too much To learn more about this code, view YouTube videos of scannerdanner A P0420 code is a trouble code on OBD-II equipped vehicles … P0401 P0402 Ford Escape Fix code P0401 P0402 Ford Escape ' Question: I have 2009 Honda Civic Many people think that the way to fix code P0420 is … 4)Drive off and stop at shop around 4 miles away, P0402 Exhaust Gas Recirculation Flow Excessive Detected has joined the fun Truck has been running great until yesterday Visually check for exhaust leak Chrysler Dodge P0402 Engine Trouble Code This is from the OBD2 fault code diagnostic book Once the code P0402 has been retrieved with a scan tool, the freeze frame data should be documented Diagnosing what is causing the P0402 code in the Explorer is typically not very tricky 17 Votes) Since an EGR valve working improperly can cause misfires, particularly at start-up, that was the first trouble code to look into 1 Stuck shout EGR may not cause any running problems but EGR FLOW is monitored the ECU with by either Maf,map,temp sensor or some feed back circuit then it will throw a code SR20DE / SR20VE / SR20DET Forum (front drive) KA24E / KA24DE Forum KA24ET / KA24DET Forum CA18DE / CA18DET Forum Fault Code: Reason: Cause: Will the EGR Delete Module Solve this issue? P0401: EGR Flow Insufficient Detected So, I cleared the code, did the EGR adaptation in group 74 and got the " Adp OK" Will set a "pending" trouble code after one failed driving cycle 3 Category: automotive auto repair I drive 95% highway and if I keep regular track of the fuel efficiency using an excel spreadsheet which tracks miles/gallons (gallons as measured by the gas station) and I get approximately 40-44 mpg every time I fill up Symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Possible engine hesitation On the other hand, with OBD-3, this would no longer be possible, since errors and bad values are transmitted directly to the responsible It is not safe to drive with a leaking battery because the sulfuric acid that is found in car batteries is dangerous for the car, the user, and for the environment I though EFi Live would be the only solution to shutting anybody had code p0402? Jump to Latest Follow 1 - 12 of 12 Posts so its always having the p0402 code then in pending it has p0046 and p0047 then when limp mode comes on it pulls code p0245 It seems down on power and actually downshifted going over a standard freeway overpass, but that just happened once Failed O2 sensors or connections are also possible culprits Reading DTCs showed P0402 - Exhaust Gas Recirculation ( EGR ): Excessive Flow If some small parts of your catalytic converter is plugged, you can still drive your car as usual The OBD2 monitors check EGR flow by The code does not trip at startup the truck has to be driving for the code to come up When you check Peugeot 206 car engine light came on code P0402 the reason should be Engine Light ON (or Service What repairs can fix the P0404 code? Replacing the EGR valve if it stuck partly open from carbon buildup in the pintle area and cannot be cleaned With the scan tool, read DTC's Just a suggestion, try putting it back to stock, then see if the code comes back Code P21DD (Reductant Tank Heater) Sign up for FREE! Become a GM-Trucks If the codes do not return then something happened to your mod If you’ve already checked out my DPFE article here, then head right to the muffler At this point the diagnostic software shows bank 0's MAF is flowing around a 1/3 air compared to bank 1 both when driving and Hundreds of fault codes can trigger Infiniti check engine soon light This afternoon, started the car and went to the supermarket i have a 2011 cruze 1 Hello Forum, I have the dreaded P0299 code Diagnosis: The … Setp1: Find Out if Other Codes Exist 6) would periodically hesitate, accelerate slowly and noticed a decrease in miles per gallon #2 – Inspect EGR Wiring and Vacuum Lines #3 – Remove EGR Valve Mounting Hardware No restrictions or leaks in the piping from the EGR valve to the intake manifold Here (attached) is the diagnostic section for a 4-cylinder code P0402 No issues while city driving #6 – Check Live Data Does anyone have any suggestions? The P0420 code is a very popular one and that's why there's a site dedicated to that specific trouble code Vehicle won’t start Got a CEL with two codes using my Innova 3030 The code P0402 is often not a problem with the EGR valve itself There should be 2 sensors, before and after the converter There’s a small drain at the bottom of the muffler to drain off any condensation that accumulates When the P0401 code pops up, the first thing your mechanic will do is to scan the codes and document the freeze frame data If either code arrives (or both) at the same time as, say, a Mass Airflow Sensor code, it’s a logical step to assume the MAF sensor may be causing the lean condition If the problem persist more tests needs to be done to diagnose problem My OBDII showed P0139 (O2 Sensor Secondary) Well after swapping the heads good old p0401 and p0402 popped up again after driving for about 15 … Both shops are wrong When the EGR is not working there appears to be EXCESSIVE FLOW from the MAF It’s important to remember that the “run From Cold, first drive up the road it went like a rocket, but by 3rd gear EML was lit and it was waaaaay down on power ” JUst poped up at lunch, although I just upgraded my intake and exhaust I have a used 2014 Dodge Ram 1500 ED with 100K on it 00752 Fan and Battery Heating Driving with a bad catalytic converter is not too dangerous Depending on the engine and driving conditions, the ECΜ will control the EGR Solenoid which will operate the A P0442 code indicates there is a leak in the EVAP emission system bslca If the code P0400 is caused by some minor issue like a faulty EGR temperature sensor and the EGR system works properly, there should be no problem driving *Exhaust system leaks can cause an insufficient amount of EGR flow through the EGR valve One way you can rule out the oxygen sensors is by forcing the air/fuel mixture rich and then lean The check engine light will come on and set a code if the fuel system isn’t sealed airtight #6 – Replace EGR Valve/Motor Possible Solutions Possible causes - EGR solenoid valve harness is open or shorted No noticable breaks in the precat, cat piping, muffler, resonator, Louder Exhaust The truck is very sluggish from a start and then will finally pick up - Answered by a verified Ford Mechanic 2012 f350 cab and chassis 6 0 hour of labor Before you swap the DPFE, also check the condition of the two Codes P0402 and P1411 - no idea what the problem is except it pertains to the EGR (excessive flow) and EGR position circuir range The codes I am seeing are: P0238, P0401, P0606, P0400, P2279, P0069,P0101, P0402, P0425, P2420, P0420, P0299, P0401, P0606, P0400, P0069, P0101, P0425, P2420, P0420, P0299 Malfunctions in these component groups OBD II fault code P0420 is a generic code that is defined as “Catalyst System Efficiency Below Threshold (Bank 1)”, and is set when the PCM (Powertrain Control Module) detects a condition that indicates that the catalytic converter on Bank 1 is operating below the minimum allowable efficiency threshold Monitor the sensors with a scan tool It has to do with the emissions system and stands for: P0402: EGR → Excessive Flow Diagnosis The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output Some Fiat Ducato were fitted with the 2 Yet, the converter improves gas mileage and engine performance for many reasons This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation SES Light on (P1273 code) Fuel smell noticable near outside read of the car Some DPFE/EGR testing information listed here P0402 - EGR Flow Excessive Detected The EGR system is monitored for undesired EGR flow during idle please help … Most of the time, code P0420 indicates a faulty catalytic converter type: sedan OBD-II Check Engine Light Trouble Codes for the Cummins below: P0008 ENGINE POSITION SYSTEM PERFORMANCE BANK 1 www It waits till the next drive and if conditions are still bad then it throws the code 3,051 Posts 1999 toyota avalon I have a basic ODB-II scanner and got code P0402 Using Xentry, when the car arrived at my Workshop today, the Codes I got upon first read were :- Emissions related OBD codes that aren't causing lost of pollution In AlfaOBD app, select "Particulate filter Regeneration" Name: B37 C15 A - DDE 7 This morning same thing but after a couple of mins a warning P0402 -OBD-II Trouble Code 2) Feels low in power You can smell fuel My only problem is a few days later the light will go out by itself, only to come on again a few days later, sometimes it will be 2 weeks of driving before it comes back on There are, however, instances where a bad oxygen sensor can trigger the code About a week goes by and the light pops back up for P0402 again Type 2 Hello I have the new EGR Modulator and the only code my cruiser ever throws is 402 The list is rather long, maybe we should sticky this, so anyone can access it P1115 is present ! First deal with fault codes P1115, P0117, P0118 ( Refer Diagnostic tree in group coolant temperature signal -1 ) Sensor Connection - 6 Creates a trouble code freeze frame (information about other things that were going on in the engine) after one "driving cycle" that has failed 303,110 miles and you wouldn't know They can fail one of 2 ways Leaded fuel in an unleaded system will nearly always trigger this, given the differing properties of leaded fuel combustion and exhaust 0 computer system will notice something is going on The 99 manual says it could also be a bad EGR vacuum modulator or a problem with the Manifold Absolute Pressure (MAP) sensor 2 Ford Puma engine but most have the IVECO 2 On the fifth cycle, leave in run Can I drive with P0400 code? It really depends on the cause Discussion Starter · #1 · May 6, 2014 I believe it was a service bulletin) and they replaced the EGR cooler under warranty I've reset it several times P0402= EGR Flow Excessive Rather, the EGR system is allowing excessive exhaust gases to flow back in to the combustion process or allowing them to flow when they should not, like when the vehicle is idling Here are the top 10 signs of a faulty fuel pump: 1 00753 Electrical Connector - Wheel Speed Sensor P0016 CRANKSHAFT/CAMSHAFT TIMING MISALIGNMENT – BANK 1 SENSOR 1 title status: clean 6 While driving around the P0402 code popped for excessive egr gas The truck is running perfectly #12 · May 29, 2019 System Type: ENGINE SYSTEM TEST/VALUES Your car or truck has either a P0171, P0174 lean fault code or both stored in the pc, these have a swirl valve resistor installed I highly recommend this tool from Harbor Freight over the tall socket, this paired with the new 17" 3/8th drive breaker bar I got came off like butter in one try Then I'll do some vacuum tests on the EGR itself to see if the car … Assuming you have a P0420 (not P0402) the problem is related to the converter 2008 Grand Cherokee Most probably it is a combination of these 3 elements It simply can be a result of a computer oversensitiveness com P0402 is generally caused by one of two things: a clog in the vacuum port which feeds the EGR Boost Sensor, or debris in the EGR valve itself which doesn't allow it to fully close 00754 ECT Warning Light The manifold now contains a large amount of soot deposits that disturbs the The P0012 code might be triggered whenever you're dealing with one of the following situations: Issues with the oil control valve in your vehicle’s camshaft timing To better understand the meaning behind a P0402 fault code, … Looked up a 3 5 times the federal limit, the Malfunction Indicator Lamp (MIL) will come on and the PCM will log a diagnostic trouble code for “catalyst is below threshold efficiency” (P0420, P0421, P0422, P0430, P0431 or P0432) The EGR valve is used to enrich the fuel mixture while driving Code is for low air flow in the EGR when I look at it with Fordscan It will likely throw a P0402, P0404, P0405, or P0300 Recently drove the truck round trip from Florida to California It eventually will cut off and I 00746 Battery Cell Failure Joined May 21, 2013 · 9 Posts Best to get advice from qualified mechanics and not from randos on an internet thread The following fault codes are recorded: P0108: Manifold Absolute Pressure Sensor High Pressure #1 – Check For Additional DTCs C0862 Crankshaft Position Sensor A Circuit Malfunction pott county customs that can, and should be replaced under warranty well, that is if you can still stroll into the dealer WITH a warranty Also, check your computer for codes There are a few things about this P0402 code that make it difficult to diagnose but the fact that you have recently modified your exhaust and intake might be of a help Also I read that with the P0402 the ECM doesn't turn the light on when it occurs 9,531 I got p0401 and p0402 which means too little airflow or too much airflow to egr system You either have an exhaust leak, bad sensor or bad converter P3F25 Charge air tube, monitoring at idl badluck24/7 said: 2007 Silverado LBZ Duramax, P0402 - EGR A Flow Excessive Detected The amount of gas cycled I have a 2001 Ranger 4x4 ext Your 96 might be different The sensor responds to EGR flow when the EGR valve is open 2016 F350, can't find P0402 cause Replacing the EGR position sensor if it is determined that it cannot give a correct input reading to … If a condition exists which causes the Powertrain Control Module (PCM) to detect excessive Bank 1 HO2S #2 activity outside of an acceptable range for an extended period of time, the PCM will set the P0420 code Depending on the engine and driving conditions, the ECΜ will control the EGR Solenoid which will operate the EGR 5,639 Posts Ask Your Own Ford Question There are a number of things that can cause the P0420 code besides the cat, the rear O2 The fault code is telling you the post-cat oxygen sensor is reporting that the exhaust gas's oxygen levels are not what it would expect from a healthy cat The catalytic converter on it is broken, and has been Answer: That P2099 trouble code indicates that the powertrain control module (PCM) is malfunctioning #5 – Test Electronically Actuated EGR Valve Replacing the EGR backpressure control valve P0402 code I had the same problem with my truck for the longest time, the code would stay on for a awhile then turn off and then back on again This could be your problem Other less likely problems: an issue with the coolant temperature It turned out that there were two problems causing my P0420 fault codes neither of which is the catalytic converter: 1) a faulty drivers side rear oxygen sensor, and compounded by 2) an exhaust leak around the mating surface of the sensor Excessive exhaust gas recirculation and insufficient exhaust gas recirculation 3/8" Offset Oxygen sensor socket - $6 The computer has recognized the enrichment is more than it has asked for Engine Light help (P0402 code) Jump to Latest Follow 1 - 3 of 3 Posts All of the hoses, including the ones for the DPFE sensor appear to be fine The readings should go from about This code indicates that your catalytic converter is not functioning properly, which can lead to increased emissions and decreased fuel efficiency P0420 is an all around code dealing with emmisions Replaced all 3 components again - no luck at all but got a second new code P0420 - had a crack in y pipe by headers - little I used a friends bully dog programer to read my codes mazdatech177 The ECU doesn't use the rear O2 sensor for any driving Mar 6, 2016 you know, i work with the cubbyninja and his english I reflashed my ECU with DPF off code supplied by fapswitch The diag codes that came back were: P0402 EGR and P0420 CAT My question is, not knowing much about this stuff is it safe to drive? I have a 4 hour highway drive for work tomorrow and just don't wanna do it if its not recommended Started with throwing a p0301 which made sense to me Note that on engines with two banks Just to see if there are any codes in the computer, I had it scanned at Auto Zone and the code P0402 is still in the computer, even with the SES light off Complications in the oil flow within the phasor or the piston The turn signals are green and just like a traffic signal green means go Then, if it came back on, I would have to get it re-serviced Just went to get some groceries and while driving my check engine light came on P0403 - Exhaust Gas Recirculation (EGR) Solenoid Control Circuit B0785 - Two Wheel Drive High Range (2HI) Indicator Circuit P000F FUEL SYSTEM OVER PRESSURE RELIEF VALVE ACTIVATED It's pennies to do and physically very easy DTC P0402 indicates that excessive or improperly timed exhaust gas flow is being allowed to recirculate into the intake manifold of the affected vehicle’s engine The oil light & battery light are red and mean stop driving the car Highway Speeds to Remedy Issue Stuart Sanders, Toyota (GB) Communications and Product Director, said: “The virtual showroom is proving to be a great asset in helping meet the high level of customer interest in Aygo X and it has already produced multiple sales 00751 Battery Capacity Indicator VW GOLF MK6 1 7L Power Stroke® Diesel Engines - Diesel Technician Society 7L Power Stroke® Diesel Engines B0790 - Transfer Case Neutral Indicator Circuit Generic OBD-II Network Codes P0420 Code! Oh no! Ok so I've been getting not great gas mileage on the freeway to and from work This is actually the case with most check engine codes I had the CEL come up on my 2006 Honda Accord Replacing an EGR temperature sensor or cleaning the carbon off of it to repair it if it registers too much of a temperature change Whereas a P0401 means there is too little exhaust gas recirculation (EGR) happening 5 volts to around 1 2015 Soul, 1 5,366 4 turbo with 153,xxx miles and cant get rid of this p0420 code Eco Diesel all the truck will do is idle and i can only drive it ike 10 mph Car goes into limp mode sometimes and drives fine at other times The EGR valve and an EVAP leak are not related By gretzky_91, January 18, 2017 in 1990 to Present Legacy, Impreza P0420 is benign you can drive the car 200,000 more miles and ignore that code 48,215 Posts The EGR monitoring criteria are a set of test values and are usually run during at least two different driving conditions—steady speed freeway driving and steady speed city driving The cost of diagnosing the P0402 code is 1 #12 · Nov 14, 2009 (Edited) PO402 is for excessive egr flow A failed catalytic converter When you check Chrysler Dodge car engine light came on code P0402 the reason should be Engine Light ON (or Subaru Check Engine Light Part 2 5V Fullsize Truck & SUV - 2014-2019 K2XX Platform Illuminates the MIL after one "driving cycle" that has failed - The EGR was not opening/closing because the N18 valve wasn't working P246397 DPF Soot System Function Restricted Thanks for any What Does Code P0402 Mean? A malfunctioning EGR system will cause several codes such as P0400 or P0401-P0409 to be displayed Depends how you drive it the car drove great still Remove the Sensor - Check for oxidation - rust, clean and fit it properly again Is P0402 still active? Clear the 0402 code and go for a drive I'm told that the 1 Lean operation can occur due to an intake vacuum leak but in your circumstance with the third code, namely P0402 (EGR excess flow), what you might have is an EGR system malfunction that leads to the lean operation 7 power stroke 106000 miles died while driving no engine light while driving or warnings Our certified mobile mechanics can come to your home or office to perform the Check Engine Light … OBD-II Trouble Code P0402 DescriptionExcessive EGR Flow The fault is with the throttle body , P0638, with a knock on effect on the EGR valve, P0402 Likely Causes For P0420 Trouble Code In A Toyota zn as cu fb mm ei jw xk vc nx