P0118 - Engine Coolant Temperature Sensor Circuit High Input
NOTE: Usually, P0118 is indicative of a bad temperature sensor, but doesn't rule out these other possibilities. If you're unsure of how to diagnose a PCM, do not attempt.
P0118 Code: Meaning, Causes, Symptoms, (& How to Fix it)
The powertrain control module (PCM) of the vehicle utilizes the data of the ECT sensor to control the supply of coolant to the engine. When your PCM notices an issue with the ECT sensor, it triggers the …
P0118 Code? Here’s How to Fix It Quickly and Easily
Dec 27, 2025 · The P0118 code indicates a high voltage input in the Engine Coolant Temperature (ECT) sensor circuit, affecting engine performance and emissions. A faulty ECT sensor, wiring issues, or …
P0118 Code (Symptoms, Causes, and How to Fix) - Car Treatments
Aug 19, 2024 · Well, if you have a code P0118, we’ll walk you through everything you need to know. From what it means and causes it to its seriousness and how to fix it, we’ve got you covered.
P0118 Code Meaning, Causes, Symptoms & Tech Notes
The P0118 code indicates that the Engine Coolant Temperature (ECT) sensor circuit is registering a high voltage input. The ECT sensor is responsible for measuring the temperature of the engine …
P0118 Engine Coolant Temperature Sensor Fix Guide
Feb 25, 2025 · 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 it correctly the first time.
p0118 Code - Engine Coolant Temperature Sensor 1 Circuit High | KBB
The P0118 code refers to issues with the Engine Coolant Temperature (ECT) circuit and its accompanying sensor. The ECT is a thermistor, or an electrical resistor, whose resistance is...
P0118 Engine Code Explained: Causes, Symptoms, and Fixes for …
Nov 27, 2025 · The P0118 code means that the engine control module (ECM) has detected a voltage signal that’s too high from the engine coolant temperature (ECT) sensor (below). In practical terms, …
Code P0118: Engine Coolant Temperature Sensor Circuit High Input
As a generic Powertrain diagnostic trouble code, P0118 applies to all vehicles from 1996 to current makes and models. This error message relates to the engine coolant temperature sensor, which is a …
P0118 Engine Code | Engine Coolant Temperature Sensor Circuit High ...
Nov 25, 2024 · DTC P0118 indicates high voltage in the engine coolant temperature (ECT) sensor circuit. A bad ECT sensor, a sensor wiring problem, or contaminated coolant can cause the problem.