Posts Tagged: P0118 Trouble Code

P0118 Engine Coolant Temperature Sensor Fix Guide

Common Causes of a P0118 Trouble Code Quick Summary A P0118 code means the engine coolant temperature sensor is reporting a voltage that’s too high for the conditions, which the PCM interprets as an unrealistically cold engine. In most cases, a P0118 is caused by a failed engine coolant temperature sensor, damaged wiring, a corroded connector, low coolant, or a sensor that has lost ground reference. I’ll walk you through exactly what P0118 means, the most common causes, how I diagnose it professionally, and the steps I take to fix … Read More