Engine Coolant Temperature Sensor 2 Circuit
A general electrical fault is reported on engine coolant temperature sensor 2 — open, shorted, or out of plausibility. Sensor 2 is typically at the radiator outlet or as redundancy on the second cylinder bank.
Affected components
- Engine coolant temperature sensor 2
Common causes
- High likelihood: Sensor failed
- Medium likelihood: Harness fault
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
Related codes
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.