P0118
Medium severityEngine Coolant Temperature (ECT) Sensor High Input
Quick answer
P0118 (Engine Coolant Temperature (ECT) Sensor High Input) means: The coolant temperature sensor is reading abnormally high, which can confuse fueling. Diagnose soon; can affect drivability and fans. Typical Malaysia repair cost: RM80–RM300 (approximate).
Symptoms
- •Check engine light
- •Poor cold-start running
- •Cooling fan behaviour changes
Likely causes
- •Faulty ECT sensor
- •Wiring/connector fault
- •Poor sensor ground
Can I drive?
Diagnose soon; can affect drivability and fans.
Estimated repair cost (Malaysia)
RM80–RM300 (approximate)
This is general information, not a diagnosis. AutoMalaya OBD helps explain your car’s actual scan data; a qualified mechanic may still need to inspect the vehicle.