Engine coolant temperature sensor
â–¶ How to fix
- Check lines of coolant temperature sensor - Check plug connection coolant temperature sensor and EGC4 - Renew coolant temperature sensor
What you'll see
No driver-visible symptom recorded.
System reaction
- Vehicle starts badly or doesnt start at all - Engine runs badly - Torque is limited
Diagnostic depth
Detection
- Voltage of coolant temperature sensor above threshold - utcw_w > UTCWMX
Possible cause
- Coolant temperature sensor has short circuit to battery - Coolant temperature sensor defect