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P0140 Diagnostic Trouble Code Discussion for December 2007

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity


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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
2003 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP52K43
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity. O2 sensor 2 readings were flat lined at 430 mv. Disconnected sensor connector and found corrosion on terminals. I am trying to find the source of the corrosion in the connector, I am suspecting a possible infiltration at a splice, but as yet have not been able...
December 05, 2007
2003 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP52K43
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity. O2 sensor 2 readings were flat lined at 430 mv. Disconnected sensor connector and found corrosion on terminals. I am trying to find the source of the corrosion in the connector, I am suspecting a possible infiltration at a splice, but as yet have not been able...
December 05, 2007