Possible Causes
WARNING: This page is about a different car, the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, and 2016 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
- Purpose of the DTC
- To monitor diesel exhaust fluid heater for open circuit, high resistance
- Electrical Cause
- Yes
- Mechanical Cause
- No
- Control Module Cavity
- Not applicable
- Monitor Description
- Diesel exhaust fluid heater open circuit, high resistance
- Prioritized List of Possible Causes
- The powertrain control module has determined an open circuit via lack of bias voltage, low current flow, no change in the state of an input in response to an output
- Diesel exhaust fluid heater control unit circuit open circuit, high resistance
- CAN communication diesel exhaust fluid tank module - DEF heater controller circuit open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Diesel exhaust fluid heater control unit failure