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Code P172 850 1997

posted by  someone claiming to be bl on  Thu Sep 22 06:05 CST 2005 [RELATED]

I'd suspect a failing O2 sensor if they are origional. They eventually set a code of their own but not right away as they generally fail slowly. Couple other common things are vac leaks or a bad ECT sensor that makes the computer "think" the engine is cold all the time. Check out volvospeed.com/bay13 for tips on tracking down vac leaks etc.

bl






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New Code P172 [850][1997]
posted by  jbogusz  on Thu Sep 22 05:22 CST 2005 >


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