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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 349 (Gas - DTCS P0306 To P0455) >> P0404-EGR Position Sensor Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(F856) 5-VOLT SUPPLY CIRCUIT HIGH RESISTANCE
(K34) EGR SIGNAL CIRCUIT HIGH RESISTANCE
(K900) SENSOR GROUND CIRCUIT HIGH RESISTANCE
(Z904) GROUND CIRCUIT HIGH RESISTANCE
(K35) EGR CONTROL CIRCUIT HIGH RESISTANCE
EXHAUST GAS RECIRCULATION (EGR) VALVE

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