The code you are referring to might be P1171. It's usually a letter in the front followed by 4 digits, especially on the 1999 models and up which runs on OBD-II. This code come up on my 1999 C70 about a month ago. The guy translated it as ROTOR SENSOR FAULT, but somehow it seems like nobody knows exactly what this is (i've already been to 3 non-dealer volvo places shops).
When I posted this on Brickboard a while back ago, someone said that it might be the oxygen sensor going out. Have you every changed the oxygen sensor?? Well anyways, I don't feel a driving difference in the vehicle...so I'm just ignoring the light. When I start feeling something, I'll look into it further.
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