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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P000B To P0123 - NGC >> P0117-Engine Coolant Temperature Sensor Circuit Low >> Possible Causes

Possible Causes

Possible Causes 
(K2) ECT SIGNAL CIRCUIT SHORTED TO GROUND
(K2) ECT SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT
EXCESSIVE RESISTANCE IN THE (K2) ECT SIGNAL CIRCUIT
ENGINE COOLANT TEMPERATURE SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  . 

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