DTC P0140: O2 Circuit No Activity Detected (Bank 1, Sensor 2)
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P0140 - O2 CIRCUIT NO ACTIVITY DETECTED (BANK 1, SENSOR 2)
| Description: If the sensor signal value is not changing from the default value, the PCM commands an oscillating air/fuel ratio attempting to detect some movement in the signal value. This DTC sets when the PCM is unable to detect movement in the sensor signal while the air/fuel ratio is oscillating. | |||
Possible Causes:
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| Diagnostic Aids: An HO2S PID switching across 0.45 volt from 0.2 to 0.9 volts indicates a normal switching HO2S. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DW . | ||