P0406 - EGR Sensor A Circuit High
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DTC DESCRIPTION P0406 - EGR SENSOR A CIRCUIT HIGH
| Description: This DTC sets when the EGRVP circuit voltage is greater than a calibrated limit for a specified amount of time. When the EGRVP is greater than a calibrated threshold, an increment counter advances for that drive cycle. This DTC sets once an increment counter reaches a calibrated limit. | |||
Possible Causes:
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| Diagnostic Aids: The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST W . | ||