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P0031 Diagnostic Trouble Code Discussion for February 2011

Air Fuel Sensor (Bank 1 Sensor 1) Heater Control Circuit Low Voltage


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Trouble Ticket Help Requests for DTC P0031
Help Request Posted
2004 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GW48SX4
P0031: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Low Voltage. After the light is cleared and the vehicle is started the light comes right back on immediately. Hard code. Was told that the PCM might have to be flashed. Not sure though. Also was told there may be a possible short to ground.
February 15, 2011
2004 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GW48SX4
P0031: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Low Voltage. After the light is cleared and the vehicle is started the light comes right back on immediately. Hard code. Was told that the PCM might have to be flashed. Not sure though. Also was told there may be a possible short to ground.
February 15, 2011