DTC P0126 Insufficient Engine Coolant Temperature For Stable Operation: Trouble Symptom

WARNING: This page is about a different variant/trim than selected.

Hard to start
Improper idling
Poor driving performance

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Refer to , OPERATION , Clear Memory Mode and Inspection Mode Refer to , PROCEDURE , Inspection Mode.

Step	Check	Yes	No
1 CHECK ENGINE COOLANT TEMPERATURE SENSOR. Disconnect the connectors from the engine coolant temperature sensor. Measure the resistance between engine coolant temperature sensor terminals when the engine coolant is cold and after warmed up. Terminals No. 1 - No. 2:	Is the resistance of engine coolant temperature sensor different between when engine coolant is cold and after warmed up?	Repair the poor contact of ECM connector.	Replace the engine coolant temperature sensor. Refer to ENGINE COOLANT TEMPERATURE SENSOR Engine Coolant Temperature Sensor.