P0606 Control Module Processor
The engine computer detected an internal processor fault.
Common causes
- Internal module fault
- Low voltage or poor ground
- Water damage
Symptoms
- Check engine light
- Limp mode
- Stalling
What to check
- Check power and grounds
- Check for updates
- Replace module if confirmed
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0606, follow the service information for that make and model.