DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Input: Condition
WARNING: This page is about a different car, the 1999 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when Power Control Module (PCM) detects ECT sensor input voltage is more than 5 volts for 5 seconds. Possible causes are:
- ECT sensor or circuit malfunction.
- PCM malfunction.