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Home >> Infiniti >> 2003 >> QX4 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0125: Insufficient Engine Coolant Temperature For Closed Loop Fuel Control >> Possible Causes

Possible Causes

ECM illuminates MIL and sets DTC P0125 when voltage sent to ECM from ECT sensor is not practical, even when some time has passed since starting engine. Or, engine coolant temperature is insufficient for closed loop fuel control. Possible causes are:

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