P0118 is rated as medium severity. Schedule service — affects performance or emissions.

P0118

Engine Coolant Temperature Sensor Circuit High

Q: What does code P0118 mean?

Engine Coolant Temperature Sensor Circuit High: The coolant temperature sensor is reading higher than expected — possible short circuit or faulty sensor.

Powertrain Code · Medium

What does P0118 mean?

The coolant temperature sensor is reading higher than expected — possible short circuit or faulty sensor.

System: Coolant System

P0118 is a powertrain diagnostic trouble code indicating engine coolant temperature sensor circuit high. This code is classified as medium severity, which means: schedule service — affects performance or emissions.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.