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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (3.7L/4.7L/5/7L - DTCS P2174 To U1449 - NGC - 1500 & 2500) >> Diagnosis and Testing >> P3442-Cylinder 6 Deactivation Control Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(K453) MDS SOLENOID NO. 6 CONTROL SHORT TO GROUND
(K453) MDS SOLENOID NO. 6 CONTROL OPEN
(Z903) GROUND CIRCUIT OPEN
INSUFFICIENT OIL PRESSURE ACTING ON THE LIFTER LOCKING PINS
OIL PASSAGES RESTRICTED
LIFTER
MDS SOLENOID
POWERTRAIN CONTROL MODULE (PCM)

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