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Buick Fault Codes List You See Here 2000-05 Engine P codes: 0030 HO2S Heater Control Circuit Sensor 1 0036 HO2S Heater Control Circuit Sensor 2 0101 MAF Sensor Performance 0102 MAF circuit low freq 0103 MAF circuit high freq 0107 MAP low voltage 0108 MAP high voltage 0112 IAT...

My 1997 LeSabre Custom (130k) threw a Check Engine light two days ago. Not having a code reader, I went to AutoZone where they can check it for free - their machine said the port was dead. I then went to Advance and their machine said the same thing. I have never experienced this before - any...