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DTC P0118: Engine Coolant Temperature Sensor Circuit - High Input: Condition

DTC is set when Engine Control Module (ECM) detects Engine Coolant Temperature (ECT) sensor input voltage is less than 0.16 volts for 5 seconds continuously, with engine running. Low engine coolant temperature (high voltage - high resistance). MIL is illuminated when ECM detects malfunction during first drive cycle. Possible causes are:

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