Question about 2002 Volkswagen Passat

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Engine code P0431 and P0421

Autozone check my engine light on my 2002 volkswagen passat wagon v6 and a P0431 and P0421 code came up. What does this mean???
While driving the car home it jumped like a hit a bump, this happened twice. I am wondering if the car actually loss power and thats why the car jumped.

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: Error Code

P1300 Misfire Detected, Fuel Level Too LowIf the low fuel level is not the case check for a dirty heat sink for the ingintion/igniter module or any other source of a misfire, if you have run out of gas this could cause the code as well

Posted on Oct 02, 2008

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SOURCE: EPS and Check engine light on 2004 Volkswagen Passat Turbo

I note that you posted your question 14 Feb 09, so happy belated Valentine's Day! Anyway, I own a 2004 VW Passat 1.8 and am currently facing the same problem (EPC light and check engine light on) and subsequently, I coded it out, which was P0322. I took my other vehicle (more reliable) into the VW dealership in Olympia Washington. I was going to replace the EPC sensor, which typically handles what is sent to the car's brain, telling it how much gas it needs to run. However, the technicians at the dealership told me to code it out before investing any money without knowing exactly what should be replaced.

I took the code and determined the "crank sensor" was defective. If you call around, you should be quoted anywhere between $48 and $90 respectfully. If your VW was lurching like it was missing for a split second at a usual speed, or died at stops, then I would say you were experiencing the same problem I was having. Hopefully, this will fix your problem? The part is pretty inexpensive, but I think what VW charges to replace the sensor, is highway robbery. Anyone in your family mechanically inclined? Good luck! (douglaslackey@yahoo.com)

Posted on Mar 09, 2009

  • 41 Answers

SOURCE: 2004 Volkswagen passat transmission code p811

as per vw, you need to check transmission oil level., not an easy thing to do. if transmission oil level ok (no dipstick on these by the way). it is a mecahnical fault.

Posted on Mar 10, 2009

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SOURCE: I have a 2008 VW Passat. When the engine light came on I stopped at Autozone and they gave me the following codes: P0089, P0642, P2004. Anyone know what they mean?

CODE 89 IS FUEL PRESSURE REGULATOR 1 PERFORMANCE.CODE 642 SENSOR REFERANCE VOLTAGE CIRCUIT "A" LOW.AND CODE 2004 IS ITAKE MANIFOLD RUNNER CONTROL STUCK OPEN.CK FOR BAD OR MISSING VACUUM LINES.IS IT STILL UNDER WARRANTY

Posted on May 05, 2009

  • 1 Answer

SOURCE: 2001 volkswagen golf epc light on loss of power

i had the same problem... Change the spark plugs and the ignition coils, All of them... It usually accelerates without giving it gas.. Don't worry about that...

Posted on Jul 05, 2009

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P0431


Well code 431 means the computer does not think the catalytic converter is working correctly. The engine computer uses data from the O2 sensors to monitor the cat.
The actual problem could be the cat, one of the O2 sensors, a fuel problem, or other things. The O2 sensors would need to be watched with a scanner to find the issue.

Jul 17, 2013 | 2002 Mitsubishi Diamante

1 Answer

Okay so I'm having problems with my 2001 vw passat v6 4motion wagon . when i start it up she sounds great but when i put it into drive and try to take off she sputters.. even when im driving down


could be time for a tune up also check the spark plug holes for oil if the valve cover gasket are leaking into there can also have a bad coil if the check engine light is on have it scanned at a auto parts store (most do it for free)the code can lead you to the bad cylinder exp code p0301 is cylinder number one p0306 is cylinder number six and the same for p0302-p035

Aug 15, 2012 | 2000 Volkswagen Passat 4Motion

1 Answer

Engine light on. 2002 Passat V6. 140k miles. Car runs very well. Auto 4motion. Oil change about a month ago. Smelling faint burning oil just recently. Engine light came on. I was very low on gas at the...


Major auto parts stores have code readers and will read out your codes for free. The engine light indicates that at least one code is waiting to be read.

Feb 08, 2011 | 2002 Volkswagen Passat

1 Answer

2002 Passat wagon, Check Engine light on, burning smell from engine?


check your oil and water sounds like its over heating ..possible radiator fan or relay..fan tempature switch maybe

Jan 05, 2011 | 2002 Volkswagen Passat

1 Answer

Have a code p0431 on a passat 4motion


P0431 Warm Up Catalyst Efficiency Below Threshold Bank 2
The word Catalyst, means that the catalytic converter needs to be replaced because some of the warm up catalyst is not working initially when the car first starts up before it warms up.

Good luck on this repair.

Nov 12, 2010 | 2002 Volkswagen Passat

2 Answers

What are codes P1492, P0421 & P0431 on the 2002 Mazda Millenia?


po421 warm up catalyst efficiency below threshhold bank 1, 431 same on bank 2..

Feb 08, 2010 | 2002 Mazda Millenia

1 Answer

I own a 2001 VW Passat Wagon.3.0 liter, 6 cyl., 30 valve engine. The 'check engine' light and 'emissions workshop' messages came on and I need to know what the problem could be.


most autoparts stores will run the check engine light for you for free....I am assuming that you either have a clogged catalytic converter, or your o2 sensor is throwing a fault....have autozone check it out and post back.

Jan 28, 2010 | 2001 Volkswagen Passat

1 Answer

My volkswagon passat wagon 2000, my check engine light comes on, saying emmisions check, it also smells of oil when I have the heat blowing???


Assuming you have the V6 engine the oil is undoubtedly from leaking Cam Adjuster Gaskets on the back left & Right front of the heads (L&R). They are a pattern failure on these motors and must be changed when the timing belt is serviced. A Big Job! You will have to read the computer codes to know what the CEL is on for.

Jan 05, 2010 | 2000 Volkswagen Passat 4Motion

1 Answer

Check engine light flashes sometimes and runs rough


A flashing check engine light is a critical indicator. That usually means that something went wrong that will damage the emission control system... and that is usually an ignition issue. First off, the OEM plug your car calls for is an NGK irridium... NOT BOSCH and not anything with more than 1 prong. Those NGKs are like 2 bucks and they are the proper plug. Make sure you have these plugs and make sure they are gapped to .028. Next, my suggestion is put all the new stuff on again. Drive it to autozone and have them delete all the codes. Drive it around until the check engine light comes on again, then immediately go back and read the codes. The ECU is smart enough to know which cylinder is misfiring. On these cars, I think they have three banks of two... meaning one "coil" inside the coil pack operates two of the cylinders. So if you get multiple misfires, it's the coil. If you get one misfire it's probably an individual plug wire or plug. Good luck.

Jul 15, 2009 | 2001 Volkswagen Passat

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