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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 40 (2.0L - DTCS P0088 To P012D) >> DTC Troubleshooting >> P0118 Engine Coolant Temperature Sensor Circuit High >> Possible Causes

Possible Causes

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Possible Causes
ECT TEMP SIGNAL CIRCUIT SHORTED TO VOLTAGE
ECT TEMP SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .