Home/Oldsmobile/Cutlass/Oldsmobile Cutlass VI (1997-1999)/Repair manual/Testing & Diagnostics/DTC P1114 - ECT SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE

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DTC P1114 - ECT SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE Oldsmobile Cutlass VI

Testing & Diagnostics

Note. For circuit reference, see the appropriate WIRING DIAGRAMS article. For connector and terminal identification, see CONNECTOR IDENTIFICATION .

Circuit Description

Engine Coolant Temperature (ECT) sensor is a thermistor that varies resistance based on temperature. As temperature of sensor increases, resistance decreases. High temperature will result in a low signal voltage. DTC will set when PCM sees an ECT sensor voltage intermittently less than 1.5 volt.

Condition required to set DTC is

Engine running for longer than 3 seconds.
ECT sensor intermittently indicates ECT greater than 274°F (134°C).