What are the trouble codes for ECT sensors?
If the ECT sensor or associated wiring has failed, you may see some of the following ECT sensor DTC trouble codes: P0115 – P0116 – P0117 – P0118 – P0119 – P0125 – P0126 – P0127 – P0128 This informative video provides information on testing and replacing automotive ECT sensors. The video maker is not affiliated with OBD-Codes.com.
What does the coolant temperature sensor ( ECT ) do?
The engine coolant temperature sensor is temperature-variable resistor, which usually has a negative temperature coefficient. It is a two-wire thermistor immersed in coolant and measures its temperature. The onboard computer uses the signal of ECT as the main correction factor when calculating the ignition advance and the injection duration.
What does ECT stand for in an engine?
ECT (Engine Coolant Temperature Sensor. An ECT sensor, or Engine Coolant Temperature Sensor is a sensor that is screwed into the engine’s block or cylinder head and is used to determine the temperature of the engine coolant.
What should the ECT reading be when the engine is hot?
In general terms if the ECT reading is cold the reading could be less than 0.5 volts (on the ground signal) and when the engine is hot the reading could be around 4 volts. For specific readings for your application, see a vehicle-specific repair manual. Note that the ECT sensor is not the same thing as a coolant temperature SENDER.
Why is my ECT sensor not working properly?
Because the tip of the sensor has to be immersed in coolant, the low coolant level or air pockets inside the cooling system can cause the signal from the sensor to be incorrect. The coolant level always has to be checked first when dealing with cooling system problems. The ECT sensor connector must be checked for damaged pins or corrosion.
Where is the coolant temperature sensor located in the engine?
Typically, the coolant temperature sensor is mounted in the engine block or cylinder head, near the thermostat or where the coolant flow is hottest. More than one coolant temperature sensor may be used on some systems to determine the temperature in different locations.
What does it mean when your car thermostat is not reading any temperature?
Typically, it’s signaled when your thermostat isn’t reading any temperature or is reading an incorrect temperature. This conclusion is reached based on the intake air temperature sensor reading, the length of time your vehicle has been running and the engine coolant temperature sensor reading.
What happens if your coolant temperature sensor goes bad?
Fuel delivery, ignition timing and engine performance are among the key elements affected by the information the coolant temperature sensor gathers. If it goes bad, it can cause several problems. Signs Your Engine Coolant Temperature (ECT) Sensor Is Bad