P2270 Diagnostic Trouble Code Discussion for March 2011
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Lean
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| Help Request | Posted | |
| 2008 Chevrolet Silverado 1500 LT 5.3L MIL Lamp on VIN: IGCEC19088 P2270: . Vehicle came in with multiple O2 HEATER CIRCUIT codes for the Bank 1 Sensor 2 Oxygen sensor as well as a p0300 engine misfire code. I never could duplicate any misfires so I replaced the B1 S2 O2 sensor. Cleared the codes and test drove with 2 good ignition cy... |
March 02, 2011 |
