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P0131 Diagnostic Trouble Code Discussion for August 2004

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
1996 Mercedes-Benz E320 3.2L MIL Lamp on VIN: WDBJF55F1T
P0131: O2 Circuit low voltage. This vehicle is a puzzler. The engine runs well. The only code obtained with an OBDII scan is P0170 with a freeze frame data for LTFT of -14.8%. After replacement of the MAF sensor and two long drives, fuel trim did not budge. Customer drove car for 1200 miles...
August 04, 2004
1998 Chevrolet Camaro 5.7L MIL Lamp on VIN: 2GH1FP32G3
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Hello fellow techs I need your input before spending a lot of money. I have a 98 Camaro Z28--350 fuel injected Came in with a long spin time at first start. I hooked up scan tool to get input and the car fired right up-- this happened two mornings in a row Rep...
August 28, 2004