P0125 HONDA – Engine Coolant Temperature Sensor 1 Malfunction/Slow Response

 

P0125: DIY Repairing Video Tutorial

https://youtu.be/wlCVakoDpNg

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P0125 HONDA Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light)  

P0125 HONDA Possible Causes

  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  

P0125 HONDA Description

  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.