Engine Coolant Temperature Sensor

By Bret Bodas, April 22, 2008

The engine coolant temperature sensor measures the temperature of engine coolant and transmits the data to the vehicle computer systems.

Symptoms of a Bad or Failing Engine Coolant Temperature Sensor

  • Check Engine Light may illuminate with an engine coolant temperature sensor code
  • Vehicle may be hard to start
  • Poor fuel mileage

Engine Coolant Temperature Sensor Related Repair Advice

  • When replacing the engine coolant temperature sensor, always use a factory (or equivalent) part, inspect the electrical connections, and ensure the entire cooling system is in good working order with fresh, clean coolant
  • An engine coolant temperature sensor code is not always caused by a defective sensor. It can be triggered by a defective thermostat, defective wiring, rusty coolant, or an overheating engine.

1 User Comment

Sign in to comment
By , December 31, 2010
You really need to check your raditor cap, they told me it was they sencor changed still same problem changed cap fixed problem purchased it at advance auto $8.00

Related Questions

See what others have asked about this, or visit the Questions page to ask your own question.
When the car is running the fans don't run. the fuse's appear to be good. could it be the engine coolant temp senso...
Do anyone know the location of the coolant temp sensor its not by thermosat say heater core & head sen...