P0406 - Exhaust Gas RECIRCULATION (EGR) Sensor A Circuit High
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P0406 - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT HIGH
| Description: The EGR monitor checks the EGR sensor signal to the PCM for high voltage. This DTC sets when the average voltage to the PCM exceeds the maximum calibrated value. | |||
Possible Causes:
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| Diagnostic Aids: A DPFEGR PID reading greater than 4.5 volts with the ignition ON, engine OFF or running indicates a hard fault. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST HH: EXHAUST GAS RECIRCULATION SYSTEM MODULE (ESM) . | ||