Question about 1995 Volvo 850
I pulled the codes on my 95 Volvo 850 GLT 5-Speed and I got the following:
512 - short term fuel mixture too rich
121 - Mass Airflow Sensor absent or faulty
223 - Idle air control valve absent or faulty
any suggestions? Im mostly wondering about the 512 code and why that would occur. Ive been told its from a bad O2 sensor
I would lean toward the MAF sensor they were known for going bad, which would cause all these codes. It wouldn't hurt to take the IAC off and spray it out with carb cleaner and some WD40, just to cover your bases. Both these units were made by Bosch and the MAF failed alot more often then the IAC.
Posted on May 23, 2009
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Posted on Jan 02, 2017
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