18020/P1612/005650
From Ross-Tech Wiki
18020/P1612/005650 - Engine Control Module Incorrectly Coded
Possible Symptoms
- Driveability Issues
- Emissions worse
- Other Fault Codes stored
Possible Causes
- Engine Control Unit (ECU) incorrectly coded
- Incorrect Cruise Control Type enabled
Possible Solutions
- Check Engine Control Unit (ECU) coding
- Check Cruise Control Activation