How do I fix code P0118?

What repairs can fix the P0118 code?

1. Repairing or replacing the ECT connector.
2. Repairing or replacing the wiring open circuit as necessary.
3. Replacing the ECT with a new sensor.

What does engine coolant temperature circuit low mean?

Diagnostic trouble code (DTC) P0117 stands for “Engine Coolant Temperature Sensor 1 Circuit Low.” It indicates that the vehicle’s powertrain control module or PCM has detected a low voltage input from the engine coolant temperature (ECT) sensor 1.

What does circuit high input mean?

This is an overview. The Engine Coolant Temperature Circuit – High Input malfunction is the code for the onboard diagnostic (OBD). When the coolant temperature is low, the resistance of the sensor will be high, and when it is high, the resistance will be low.

What are the symptoms of a bad engine temperature sensor?

Symptoms of a bad or failing coolant temperature switch (sensor)

• Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy.
• Black smoke from engine.
• Overheating engine.
• Check Engine Light comes on.

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 happens when a fuel temperature sensor goes bad?

A faulty rail sensor may upset the air fuel ratio and cause the vehicle to experience performance issues such as a decrease in power, acceleration, and fuel efficiency, and in some cases may even experience stalling.

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 are the p0117 and p0118 ECT codes?

This article will help you to diagnose diagnostic trouble codes P0117 (Engine Coolant Temperature Circuit Low Input) and/or P0118 (Engine Coolant Temperature Circuit High Input). Ford uses two different temperature sensors. One is called the engine coolant temperature (ECT) sensor and the other is the engine cylinder head temperature (CHT) sensor.

What should the voltage be on a p0118 Chevrolet?

When the coolant is warm, the sensor resistance is low. The signal voltage is pulled down a greater amount; therefore, the PCM senses a low signal voltage (high temperature). At normal operating temperature, the voltage should measure about 1.5-2.0 volts at the PCM. P0118 CHEVROLET More Information.

What’s the name of the coolant temperature sensor?

One is called the engine coolant temperature (ECT) sensor and the other is the engine cylinder head temperature (CHT) sensor. This article concentrates on the engine coolant temperature sensor (see photo below).