P2270 - O2 Sensor Signal Stuck Lean - Bank 1, Sensor 2
P2270 - O2 SENSOR SIGNAL STUCK LEAN - BANK 1, SENSOR 2
| Description: | The downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the powertrain control module (PCM). The test fails if 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 | - | refer to PINPOINT TEST H . | refer to PINPOINT TEST H . | |