P0126 Mazda - Coolant Thermostat Condition Low Operating Temperature
- 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)
P0126 Mazda 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.
MAZDA Technical Service Bulletins for P0126 code
2013 MAZDA CX-5 103100 Power Train:automatic Transmission:control Module (tcm, Pcm) Details
2013 MAZDA CX-5 118000 Electrical System: Software Details
2006 MAZDA RX-8 Engine And Engine Cooling:engine Details
2007 MAZDA RX-8 Engine And Engine Cooling:engine Details
2006 MAZDA RX-8 061000 Engine And Engine Cooling:engine Details
2007 MAZDA RX-8 061000 Engine And Engine Cooling:engine Details
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