Internal Control Module Keep Alive Memory (KAM) Error
The ECU detected a fault in its KAM (battery-backed memory used to store adaptations and DTCs). Often appears after battery disconnect or low battery; persistent codes indicate an internal ECU fault.
Affected components
- Ecm
- Vehicle battery
Common causes
- High likelihood: Battery disconnected or voltage too low
- Low likelihood: ECU internal memory fault
- Low likelihood: Module software outdated, reflash may resolve
Possible symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
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.