Possible Causes
- Purpose of the DTC
- To monitor diesel exhaust fluid heater control unit
- Electrical Cause
- Mechanical Cause
- Control Module Signal Name
- Monitor Description
- Diesel exhaust fluid heater control unit current too high
- Prioritized List of Possible Causes
- The powertrain control module has measured current flow above a specified range
- Diesel exhaust fluid heater control unit circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Diesel exhaust fluid heater control unit failure