DTC P0134: O2 Circuit No Activity Detected (Bank 1, Sensor 1)
DTC P0134: O2 CIRCUIT NO ACTIVITY DETECTED (BANK 1, SENSOR 1)
| Description: | The powertrain control module (PCM) monitors the heated oxygen sensor (HO2S) for a lack of movement concern. 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. The test fails 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: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | GO to PINPOINT TEST DZ . | GO to PINPOINT TEST DZ . |