DTC P1138 - Lack Of HO2S12 Switches - Sensor Indicates Rich
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DTC DESCRIPTION P1138 - LACK OF HO2S12 SWITCHES AND SENSOR INDICATES RICH
| 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 HO2S12 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 . | ||