P0126 - Insufficient Coolant Temperature for Stable Operation
- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection
When is the code detected?
The voltage sent to Engine Control Module (ECM) from the sensor is not practical, even when some time has passed after starting the engine.
- Engine Light ON (or Service Engine Soon Warning Light)
The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
P0126 Information for specific makes
Need more help?
Do you need more help with the P0126 code? ask a question to our users or search the top hand picked automotive forums for more information
Repair Shops Around Your Area
Need parts to fix this code? Search hundreds of stores at the same time and compare prices
Help us improve Engine-Codes.com. Leave a comment below or tell us if the information above help you fix the code. What are symptoms is your vehicle for the P0126 code?
Have you replaced any parts?
Any information is appreciated. Thanks