DTC P20C4 (DCU) - REDUCTANT Heater C Control Circuit High
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P20C4 (DCU) - REDUCTANT HEATER C CONTROL CIRCUIT HIGH
| Description: | This DTC sets when the reductant dosage control module detects that the RDHTRC3 circuit is drawing 0 amps for greater than 250 milliseconds. | ||
| Possible Causes: |
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| Diagnostic Aids: | The presence of this DTC may indicate 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 panel cluster (IPC) message center. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RH . | ||