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P1139 Diagnostic Trouble Code Discussion for June 2008

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Performance


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Trouble Ticket Help Requests for DTC P1139
Help Request Posted
1997 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y4V
P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. well first i would again like to thank all for the previous help on this one. i thought all was well on this vehicle after cam timing set properly. we had been fighting a p0340 code. i was performing final test drives to verify repairs when cel light popped on...
June 10, 2008
1997 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y4V
P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. well first i would again like to thank all for the previous help on this one. i thought all was well on this vehicle after cam timing set properly. we had been fighting a p0340 code. i was performing final test drives to verify repairs when cel light popped on...
June 16, 2008
1996 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD52Y9T
P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. ... and ses light on, originally. 6 codes stored po171, po174, po131, po138, po151,p1139. fixed poor run with plugs, wires, and fuel filter and cleared codes. (hoped repair would eliminate some codes) vehicle returned with same...
June 25, 2008
1997 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y4V
P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. well first i would again like to thank all for the previous help on this one. i thought all was well on this vehicle after cam timing set properly. we had been fighting a p0340 code. i was performing final test drives to verify repairs when cel light popped on...
June 10, 2008
1997 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y4V
P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. well first i would again like to thank all for the previous help on this one. i thought all was well on this vehicle after cam timing set properly. we had been fighting a p0340 code. i was performing final test drives to verify repairs when cel light popped on...
June 16, 2008
1996 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD52Y9T
P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. ... and ses light on, originally. 6 codes stored po171, po174, po131, po138, po151,p1139. fixed poor run with plugs, wires, and fuel filter and cleared codes. (hoped repair would eliminate some codes) vehicle returned with same...
June 25, 2008