Passat (B5) :: Check Engine Light Came On Repeatedly - Gas Cap?


Jan 20, 2009

So I've just come back from the 5th time visiting the dealership for them to clear the "CHECK ENGINE" light off of my dash. Each time they've told me that it is my gas cap....so on the 4th time I bought a brand new gas cap. This time the car drove for 478kms...then the light came on again. I know they are just gonna say EVAP (gas cap issue).

What is the next step? What else could be tripping this fault?

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Since Sept, my check engine light has come on a total of 6 times. Every time, I bring it into the dealership to get it fixed. The first time, they told me it was a loose gas cap. The next couple times they said that different codes were coming up, and they continually fix something (they've changed the sensor in the gas tank, changed the filter in the front and the back of the car), but nothing seems to do the trick. This last time, I got the car back right before Halloween, and the light came on. What the problem could be?

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The mechanic that is working on it now says the code is P0443. He checked everything mechanical finding nothing. Now he is claiming it is an electrical problem and needs more time $$$ to find it.

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I was running late the other day for work so I had to jump in my car and go with out letting it run first for a minute or two and while on the highway the engine light came on and it has not turned off yet. I am getting my oil changed at my local shop on tuesday.

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If I keep changing my oil every 2000 miles will it sludge again? Dealer recommended every 1500 to 2000 miles! I've spent 15k on this car so far, and driven it about 2k miles......

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Here is my new problem which I am trying to determine if it has to do with the above issue. Over the past few days my car has been giving me EPC and ASR lights along with switching to back-up power. I have been on expressways driving 80, i have been going around corners doing less than 20, and it has happened everywhere in between. Keep in mind that when it happens i slip my car into neutral, pull over, and reboot. After that everything is fine for a short while. I stopped at Auto Zone to get a diagnostic, and for some reason, which i did not feel like questioning due to the way the autozone employee was mentally equipped, they did not give me codes, but descriptions.

(1) Camshaft Positioning Sensor Fault A Bank 1
(2) Camshaft Positioning Sensor Fault A Bank 2
(3) PCM Processor Fault
(4) Running too lean on Bank 1
(5) Running too lean on bank 2.

These are the descriptions for the 5 fault codes. I am planning on stopping back today and getting the proper codes. But would like to get some opinions in the mean time. I've check fuses and relays pertaining to this issue and all have tested ok. Nothing is leaking from my engine and nothing is visibly damaged, except for the vacuum servo arm which is broken (see above paragraph). I feel like the issue is with the ECM (PCM, PCM, ECU, whatever).

Another interesting thing is that when i operate my car using the cruise control, there are no issues what so ever. Possibly an issue with the throttle or its many components?

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How many miles do I have to drive the car after a Check Engine Light reset in order to qualify for a Cali SMOG Check.

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How do you reset the CE light on a 99 passat?

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So they ordered a new one and replaced it on Friday. I was looking at the paperwork, seemed like a fun job, pull the intake manifold, replace the part, put back together.

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