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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 350 (Gas - DTCS P0456 To P0571) >> P0551-Power Steering Pressure Switch 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 
INTERMITTENT DTC
(K66) P/S SIGNAL CIRCUIT SHORTED TO GROUND
(K66) P/S SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(Z988) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
POWER STEERING SWITCH
POWERTRAIN CONTROL MODULE (PCM)

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