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P0131 Diagnostic Trouble Code Discussion for September 2007

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)


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Trouble Ticket Help Requests for DTC P0131
Help Request Posted
2002 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54KX2
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. ... and codes p0171 lean, and p0131 O2 sensor voltage low. Found severe dirt on MAF wire and very dirty air filter. Changed air and fuel filters and cleaned MAF wire. Car now has plenty of power, so I clear codes and let it go. One week later, MIL on again wit...
September 11, 2007
2002 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54KX2
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. ... and codes p0171 lean, and p0131 O2 sensor voltage low. Found severe dirt on MAF wire and very dirty air filter. Changed air and fuel filters and cleaned MAF wire. Car now has plenty of power, so I clear codes and let it go. One week later, MIL on again wit...
September 11, 2007