DTC U0100-87: Lost Communication With ECM/PCM "A" - Missing message: Action
WARNING: This page is about a different car, the 2021 Land Rover Range Rover and 2020 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
- Prioritised steps to perform:
- Refer to the appropriate system wiring diagrams and check the powertrain control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the appropriate system wiring diagrams and check the FlexRay bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Replace the wiring harness as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, check the powertrain control module for related Diagnostic Trouble Code(s) and refer to the relevant DTC index