Engine-Codes.com | All About OBDII Engine Codes
Engine-Codes.com | All About OBDII Engine Codes
Articles » Coolant Temperature Sensor

Coolant Temperature Sensor

Comments |  Add Comment

The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Μodule (ECΜ). The modified signal returns to the ECΜ as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. On most temperature sensors, the electrical resistance of the thermistor decreases as temperature increases. Coolant temperature sensor resistance varies with the make and model of the vehicles.

Faulty coolant temperature sensor will send an improper signal to the ECΜ, which may cause the engine to overheat and/or trigger the engine light to come ON.

Google +

Related OBDII Components

- Catalytic Converter
- Engine Coolant Temperature (ECT) Sensor
- Evaporative Emission (EVAP) System
- Exhaust Gas Recirculation (EGR)
- Intake Air Temperature (IAT) Sensor
- Knock Sensor (KS)
- Manifold Absolute Pressure (MAP) Sensor
- Mass Air Flow (MAF) Sensor
- Oxygen Sensor (O2S) - Air/Fuel (A/F) Sensor
- Positive Crankcase Ventilation (PCV)
- Throttle Position Sensor (TPS)
- Vehicle Speed Sensors (VSS)

Comments

OBD Engine Codes Comments Powered by Disqus
Engine Light ON?

The Engine-Codes.com ELM327 WiFi Car Diagnostic connects to your Android phone, iPhone, iPad, or Windows computer from your vehicle.
Ask OBDII Question