How do I fix code P0118?
What repairs can fix the P0118 code?
- Repairing or replacing the ECT connector.
- Repairing or replacing the wiring open circuit as necessary.
- Replacing the ECT with a new sensor.
What does engine coolant temperature circuit high input mean?
The onboard diagnostic (OBD) code P0118 is an Engine Coolant Temperature Circuit – High Input malfunction. Normal operation of the sensor means that resistance will be high when the coolant temperature is low and the resistance drops when the coolant temperature increases.
What can cause a P0118?
What Is the Cause of Code P0118?
- Rusted/Dirty Engine Coolant.
- Air Pocket in Coolant System.
- Frayed ECT wiring.
- Malfunctioning ECT Sensor.
- Open ECT circuit.
- Faulty ECM.
What is the p0118 coolant temperature sensor circuit?
P0118 Engine Coolant Temperature Sensor Circuit Hi Voltage: diagnostic checks for a resistance corresponding to a very low engine coolant temperature. Engine control module (ECM) or PCM (powertrain control module) supplies 5 V to the ECT sensor signal circuit and a ground for the low reference circuit.
What does the code p0118 mean on the ECM?
This data is sent to the ECM, which uses this data to regulate the air to fuel ratio, cooling fans, and ignition spark timing needed by the engine. Code P0118 is the result of the ECT sensor indicating a high voltage input from the coolant temperature circuit. (typically over 4.7V)
Why is the engine coolant temperature sensor high?
The engine must run for a calibration period of time before the engine coolant temperature sensor high check is executed. This allows the engine time to heat the coolant up beyond the bottom of the sensor range in cold ambient conditions.
What are the symptoms of a p0118 car accident?
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