P1139 Diagnostic Trouble Code Discussion for April 2012
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Performance
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| Help Request | Posted | |
| 1997 Oldsmobile Aurora 4.0L pops back/intake VIN: 1G3GR62C4V P1139: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching. Now over the last few months it developed the above codes and I have not seen that the t.c. clutch has been a problem but we flushed the trans and put conditioner in it to keep it alive as best as possible. Very nice car. Though it has developed a lean type ba... |
April 18, 2012 |
