FixVault

Possible Causes

Possible Causes 
(K66) P/S SWITCH SIGNAL CIRCUIT OPEN
(K66) P/S SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
(Z902) GROUND CIRCUIT OPEN
POWER STEERING PRESSURE SWITCH
POWERTRAIN CONTROL MODULE (PCM)

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