1999 Buick Regal LS 3.8L MIL Lamp on
Mass Air flow code Rear O2 heater circuit code and the front O2 not switching codes were the begining of my problems. We replaced Mass Air flow meter and wiring harnes to sensor. We replace rear O2 sensor for heater circuit, Replaced front O2 sensor and was co...
Summary posted 9/15/2009
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Vehicle Data1999 Buick Regal LS
Trouble Codes
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Message Closed w/Summary
Vehicle Data
1999 Buick Regal LS
VIN | 2G4WB52K7X |
Engine | 3.8 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / O2 Problem No crosscounts |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Trouble Codes
1133 | O2 Insufficient Switch of O2 sensor |