P1119
Engine Coolant Temperature Signal Out Of Rage
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$6–28 (est.)
Symptoms
- Incorrect coolant temperature readings on the dashboard
- Problems starting the engine, especially when cold
- Increased fuel consumption
- Unstable engine operation
- The cooling fan turns on at the wrong time
Causes
- Faulty coolant temperature sensor
- Open or short circuit in wiring
- Poor contact in the sensor connector
- Problems with the engine ECU
- Low coolant level
How to Fix
- Check coolant level
- Inspect the temperature sensor and its connector
- Check wiring integrity
- Measure sensor resistance at different temperatures
- Replace coolant temperature sensor if necessary