Auto Configuration Engine Coolant Temperature Input Not Present
Auto Configuration Engine Coolant Temperature Input Not Present: the control module has detected this fault condition.
Affected components
- Coolant temperature sensor
- Vehicle configuration
Common causes
- High likelihood: ECT input wiring missing
Possible symptoms
- Check engine light on
- Cooling fan runs constantly or not at all
- Cabin heater weak or excessively hot
- Possible long warm-up time or hard cold start
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.