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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1252 (6.4L - DTCS P3400 To U1449 - 2500 Hd & 3500 Hd) >> DTC Troubleshooting >> P3450-Cylinder 7 Deactivation Control Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2016 RAM 3500 HD and 2016 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
MDS SOLENOID 7 CONTROL SHORTED TO GROUND
MDS SOLENOID 7 CONTROL OPEN
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  .