DTC P1127 - Exhaust Temperature Out Of Range, O2 Sensor Tests Not Completed
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DTC DESCRIPTION P1127 - EXHAUST TEMPERATURE OUT OF RANGE, O2 SENSOR TESTS NOT COMPLETED
| Description: | The heated oxygen sensor (HO2S) monitor uses an exhaust temperature model to determine when the universal HO2S heaters are cycled ON. This DTC sets when the inferred exhaust temperature is below a minimum calibrated value. | ||
| Possible Causes: |
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| Diagnostic Aids: | Monitor the universal HO2S heater PIDs to determine the ON or OFF state. The DTC P1127 is present if the exhaust is not hot. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DZ . | ||