Possible Causes
- Purpose of the DTC
- Monitoring of the diesel exhaust fluid level sensor (level)
- Electrical Cause
- Mechanical Cause
- Control Module Cavity
- Circuit reference I_T_RAULS Signal
- Monitor Description
- DEF level value not available
- Prioritized List of Possible Causes
- Overfilled DEF tank - Refer to Exhaust system - DIAGNOSIS AND TESTING
and refer to functionallity of level sensor (possibility that the sensor reads 0 if over filled).
- Customer has over filled the DEF tank
- The powertrain control module does not detect a signal which ought to be present
- Diesel exhaust fluid tank module circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion