Code No. P0118:
Engine Coolant Temperature Sensor High
DIAGNOSIS CONTENT
Voltage above upper limit
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- The engine coolant temperature sensor output voltage is above the threshold for
the specified time.
FAIL SAFE FUNCTION
- Engine coolant temperature is recognized as specified
temperature.
- At engine start, preheating function is always operated.
PROBABLE CAUSE
- Failed engine coolant temperature sensor
- Failed electrical harness in engine coolant temperature sensor circuit
(Refer to Symptom Procedure - Engine Coolant Temperature Sensor System .)