Possible Causes
- Purpose of the DTC
- To check CAN communication between powertrain control module and diesel exhaust fluid heater control unit
- Electrical Cause
- Mechanical Cause
- Control Module Signal Name
- Circuit reference CAN_L_3
- Circuit reference CAN_3_H
- Monitor Description
- Communication error between powertrain control module and diesel exhaust fluid heater control unit
- Prioritized List of Possible Causes
- The powertrain control module has not received the expected CAN signal from the diesel exhaust fluid heater control unit/diesel sub net CAN within the specified time interval
- Diesel exhaust fluid heater control unit/diesel sub net CAN circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion