DTC P2271 - O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2)
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P2271 - O2 SENSOR SIGNAL BIASED/STUCK RICH (BANK 1 SENSOR 2)
| Description: | The heated oxygen sensor bank 1, sensor 2 (HO2S12) is forced rich and lean and monitored by the PCM. This DTC sets when the PCM does not detect the output of the HO2S in a calibrated amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST H . | ||