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P0131 Diagnostic Trouble Code Discussion for February 2006

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
2001 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GCEK14T81
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Truck came in with code P0140 changed b1s2 o2 sensor. came back soon after with codes as above. Checked cat converter for pluged Clean and Clear, could not find vacuum leak at intake with carb clean. Plugs all look good. Missfire monitor 1,3,5,7. Sometimes idl...
February 08, 2006
2001 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GCEK14T81
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Truck came in with code P0140 changed b1s2 o2 sensor. came back soon after with codes as above. Checked cat converter for pluged Clean and Clear, could not find vacuum leak at intake with carb clean. Plugs all look good. Missfire monitor 1,3,5,7. Sometimes idl...
February 08, 2006