2000 Jetta GL

  • 1 POST

My check engine light has recently turned on, I went to Autozone to get a diagnostic in order to get an idea and here is the list they printed out for me:

Mass airflow input is lower than expected for current engine opperating
Transmission Transfer Case contact plate 'B' open circuit
Incorrect gear ratio condition
Upstream heated 02 sensors swapped
Malfunction in electrical circuit for engine speed input
Trans control switch (O/D cancel) out of self test range

The only symptoms I have noticed outside of the check engine light is that when I am stopped in traffic it runs a little rough and has stalled once or twice, but starts right up again. And also when I am driving on the highway it sometimes revs high.

What I am looking for is the most cost effective way to get this looked at/taken care of

Do you
have the same problem?
Thursday, May 25th, 2006 AT 2:13 PM

1 Reply

  • 86 POSTS

Honestly the best possible solution is to take it to a shop that specializes in european cars the problems and codes you described mean several different things that are not always easy to diagnose. Dont take it to the vw dealer this is not cost effective and should only be considered as a last resort. Your best bet is to find a specialty shop in your area that has a good reputation. More than likely however these problems will cost a considerable amount of money. The engine reving up on the highway is related to your transfer case contact plate and incorrect gear ratio codes the dying at idle is related to your mass airflow meter this problem usually occurs when air filters are not changed regularley on some european models it is related to oil going past a malfunctioning oil seperator and onto the hot film on your mass airflow meter a dirty air filter will cause this because when debri is allowed to cover the sensors resistor which meters the air entering the engine the computer cannot calculate the appropriatte fuel mixture therefore causing the engine to run lean unfortunately you connot correct this on most mass sensors by cleaning them they must be replaced some american mass sensors may be cleaned but the one you have in your car I believe is a hot film type which when cleaned will destroy the delicate surface of the sensor rendering it useless also the o2 sensors being swapped code I am not familiar with if the code means what it sais it would seem that problem would be easy to fix simply by swapping the connectors to the upstream o2 sensors however I dont think its going to be quite that simple anyway I hope this helps I run a shop specializing in european cars in texas if your in my area stop by or check out the website eurasianmotorworks. Com

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Thursday, May 25th, 2006 AT 8:33 PM

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