P1139 Diagnostic Trouble Code Discussion for June 2011
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Performance
Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.Trouble Ticket Help Requests for DTC P1139
| Help Request | Posted | |
| 1997 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY5297V P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. Getting codes P0137 and P1139. Have followed the trouble trees for the codes to no avail, all wiring checks out and a new pcm was installed but it didn't fix the problem. The precat O2 sensor will stay at .080 volts and occassionally will switch like the upstr... |
June 20, 2011 |
