Possible Causes
- Purpose of the DTC
- To monitor diesel exhaust fluid heater control unit
- Electrical Cause
- Mechanical Cause
- Control Module Signal Name
- Circuit reference B_D_CANH3
- Circuit reference B_D_CANL3
- Monitor Description
- Diesel exhaust fluid heater control unit over temperature
- Prioritized List of Possible Causes
- The powertrain control module detected an internal temperature above the expected range
- Diesel exhaust fluid heater control unit circuit short circuit to power
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Diesel exhaust fluid heater control unit failure