Control Module Improper Shutdown Performance
The control module did not complete its shutdown sequence cleanly — power was lost before housekeeping (saving learned values, freeze frames, adaptations) finished.
Affected components
- Control module
- Module power supply
Common causes
- High likelihood: Power supply lost before shutdown completed
- Medium likelihood: Bad ground connection
- Low likelihood: Gateway module routing CAN messages incorrectly
Possible symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.