P2270 Diagnostic Trouble Code Discussion for February 2009
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Lean
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| Help Request | Posted | |
| 2002 Mini Cooper 1.6L MIL Lamp on VIN: WMWRC33402 P2270: o2 sensor stuck lean bank 1 sensor 2. ... thought it was a slam dunk needing a new rear o2 sensor - fully warm and idling, front o2 switches beautifully between .1 and .8mV. Rear is parked at .37 to .40mV, and was switching longer than I would have liked. I replaced the rear o2 sensor, cleared the... |
February 24, 2009 |
