DTC U0166-87: Lost Communication With Auxiliary Heater Control Module - Missing message: Action
WARNING: This page is about a different car, the 2016 Land Rover LR4, 2015 Land Rover LR4, and 2014 Land Rover LR4. However, it is still accessible from the selected car via links, so may be relevant.
- Refer to the appropriate system wiring diagrams and check the fuel fired booster heater power and ground circuits for open circuit, high resistance
- Using the manufacturer approved diagnostic system, perform a CAN network integrity test. Refer to the appropriate system wiring diagrams and check the medium speed CAN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Using the manufacturer approved diagnostic system, check the fuel fired booster heater for related DTCs and refer to the relevant DTC index