DTC P0606-86: Control Module Processor - Signal invalid: Action
- Refer to the appropriate system wiring diagrams and check connections are secure and wiring integrity
- Using the manufacturer approved diagnostic system check and install latest relevant level of software to the engine control module, clear the DTC and retest the system
- Refer to the appropriate system wiring diagrams and check the engine control module ground, power circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Check and install a new engine control module as required