Question about 1993 Volvo 850

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Code 122 of A&, 93 Volvo 850

Hi

I got three codes off my car, A1 313, A3 444 and A7 122. Are ALL of these related to the PNP sensor or is the A7 122 caused by a different problem?

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Hi,
I am not a mechanic, but was recently looking into codes for my 1994 850. Here is what I found out...perhaps it will be useful to you if you do not already know this: The A1 313 is for a "Faulty gear position sensor PNP" ; can not find info on the others. My limited understanding is that the other codes refer to different systems; e.g. the A1 is for transmission codes, A2 is for fuel system, etc.

Posted on Nov 26, 2009

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Check engine light is on took to auto zone they gave me a code that said P1166


Hello there:
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Hi.

Mixture problems can be caused by a number of factors and faults. A computer module, the PCM, determines the mixture using data from different sensors. Re-circulated gas is also used to determine the mixture.

If the problem only happened at cold, then check the MAF (mass air flow) and (IAT intake air temperature) sensor, and also have the vacuum system tested for leaks, hat can affect the mixture and make a difference, particularly when idling.


If the problem reported by the error code was mixture related, then a common cause is often the EGR valve, that regulates gas re-circulation. In this case the engine will be running rough at idle and when driving.


More problems that can return mixture related codes can concern:
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If the only problem was a mixture related problem, then wait to see if the code comes back. The engine warning light will turn on. In that case check for additional codes and report the code here.

Things are different if there are more codes. Also there are differences if the mixture is too rich or poor.


Regards.

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Hi Garcha,

Both codes relate to O2 Sensor # 2

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Cheers,


"If this has helped you in any way, please rate this solution" :-)



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very possible that the repair they did caused the o2 problem. The only codes u get for "leaks" are emissions related. I'd like to know the EXACT code he got, if u can find that out, I can help u even more. Thanks

Chris

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