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Home >> Lexus >> 2003 >> GX 470 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem Or P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> Circuit Description

Circuit Description

ECT sensor is a thermistor sensor which monitors water temperature. DTC is set when ECT sensor signal value is out of range during engine operation (2 trip detection logic). Possible causes are:

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