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Home >> Toyota >> 2003 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self Diagnostics >> Diagnostic Tests >> DTC P0115: Engine Coolant Temperature Sensor Circuit >> Possible Causes

Possible Causes

DTC is set when ECM detects an open or short in ECT sensor circuit. If DTC P0115 exists, ECM will operate in fail-safe mode in which engine coolant temperature is assumed to be 176°F (80°C). Possible causes are:

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