Question about 1999 Audi A4

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Engine warning light came on unexpectedly

The engine warning light came on unexpectedly

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My engine light came on as well.

I took it to my mechanic to hook up to a diagnostic computer, and it was a p1136, P1138 code and another i can't remember at this time

They were both dealing with my Air fuel mixture being too lean.(not getting enough fuel)

It could also be an EVAP code, meaning a gas cap was loose, or there was a gas leak somewhere(mine was a hole in the muffler)

He said it could also be a sensor, or maybe the mass oxygen sensor.. but nothing is really wrong with the car.

I hope this helps some.

Posted on May 21, 2009

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Any running faults. Does it mis fire or cut out if no take it to a audi specialist or auto electrician it may just be a faulty sensor it may just need resetting

Posted on May 13, 2009

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