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Home >> Jeep >> 2007 >> Commander Overland, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0325 To P0501 >> P0404-EGR Position Sensor Rationality Open >> Possible Causes
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Possible Causes

Possible Causes 
EXCESSIVE RESISTANCE IN THE (K34) EGR SENSOR SIGNAL CIRCUIT
EXCESSIVE RESISTANCE IN THE (F856) 5 VOLT SUPPLY CIRCUIT
EXCESSIVE RESISTANCE IN THE (K35) EGR SOLENOID CONTROL CIRCUIT
EXCESSIVE RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT
(Z42) EGR SOLENOID GROUND CIRCUIT OPEN
EGR SOLENOID ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

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