P2271 Diagnostic Trouble Code Discussion for April 2012
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Rich
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| Help Request | Posted | |
| 2008 GMC Sierra 1500 WT 4.8L MIL Lamp on VIN: 1GTEK19C68 P2271: . This is a strange one does not set codes all the time you might have to drive 4 or 5 times to set codes. |
April 04, 2012 |
