P0601 Internal Control Module Memory Check Sum Error
The engine computer detected corrupted memory.
Common causes
- Interrupted software update
- Internal module fault
Symptoms
- Check engine light
- No start or limp mode
What to check
- Check for available software updates
- Reprogram the module
- Replace module if reprogramming fails
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0601, follow the service information for that make and model.