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Translating Codes 422 and 412 850 1997

I have to half way agree with Klaus on this one. There is no listing for a 412 code in the Volvo service manual for that system. There is a listing for the 422 though and I just had a car in yesterday for that code, first time that I can recall seeing it in all of the years I have worked on them. It is listed as an "atmospheric pressure sensor" code. Bad pressure sensor like you see in a lot of the later model cars. I swapped it out and it was good to go.

Good luck,
Mark






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