Control Module Timer/Clock Performance
The control module's internal timer or clock has drifted or stopped — affects time-stamped diagnostic events, scheduled tasks and security challenges.
Affected components
- Control module
- Module oscillator
Common causes
- High likelihood: Internal oscillator drifted
- Low likelihood: Gateway module routing CAN messages incorrectly
- Low likelihood: CAN terminating resistor (120 Ω) drifted out of spec
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.