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Home >> Mazda >> 2001 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit, High Input >> Condition

DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit, High Input: Condition

DTC is set if input voltage from ECT sensor is more than 4.9 volts. This is a continuous monitor. MIL is illuminated when Powertrain Control Module (PCM) detects malfunction during first drive cycle. Possible causes are: