P2271 Diagnostic Trouble Code Discussion for October 2016
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Rich
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| Help Request | Posted | |
| 2010 Volvo XC70 3.2 3.2L MIL Lamp on VIN: YV4960BZ9A P2271: O2 Sensor Stuck Rich Bank 1 Sensor 2. Vehicle Runs excellent. All PID data looks good. Short term fuel trims look good- around 0%-2%. All the O2 sensors seem to be switching correctly. A new engine harness was installed 3 months for a throttle pedal code setting. There are no vacuum leaks found. M... |
October 26, 2016 |
