Symptoms of a P0118 could include: Very poor fuel economy; A no start condition; Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring; Illumination of MIL; Causes. A code P0118 may mean that one or more of the following has happened: A bad connection at the sensor

What does the P0118 Code mean? The P0118 code indicates that your powertrain control module (PCM) observes a high voltage input (normally over 4.7V) from the coolant temperature circuit. The main function of the engine coolant temperature (ECT) sensor is to monitor a variation in the temperature of the engine coolant.

A P0118 code is triggered when the engine control module detects a high voltage condition in the coolant temperature sensor circuit. The most common causes include a faulty ECT sensor, damaged or corroded wiring, contaminated coolant, or, rarely, a defective engine control module.

2025年1月28日 · What does the P0118 – Engine Coolant Temperature Sensor 1 Circuit High mean? The P0118 code is a diagnostic trouble code (DTC) that indicates an issue with the Engine Coolant Temperature Sensor 1 circuit. Specifically, it signals that the voltage reading from this sensor is higher than expected.

What Does the Code P0118 Mean? 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 thermistor located in the cylinder head and screwed into the coolant passage.

2025年1月10日 · Here's what you need to do if your engine is showing error code P0118, which is triggered when the engine control module detects an abnormally high voltage signal from the engine coolant...

2024年12月18日 · P0118 indicates that there is a high input voltage from the Engine Coolant Temperature (ECT) sensor circuit. What are common symptoms of P0118? The most common symptoms include an illuminated check engine light, poor fuel economy, hard starting issues, overheating problems, and poor heater performance.

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...

P0118 is a diagnostic trouble code (DTC) for "Engine Coolant Temperature (ECT) Sensor Circuit High Open Problem". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

2016年1月11日 · P0118 will set if the voltage measured by the engine computer (ECM/PCM) is higher due to high resistance (Low Voltage/High Temp [Warm Engine]) like a disconnected ECT sensor. The engine computer checks for a resistance …