Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Valve Lifter Oil Manifold Replacement (See: Engine, Cooling and Exhaust/Engine/Camshaft, Lifters and Push Rods/Lifter / Lash
Adjuster/Service and Repair/Valve Lifter Oil Manifold Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P3441
DTC P3401, P3425, P3441, or P3449
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P3401
- Cylinder 1 Deactivation Solenoid Control Circuit
DTC P3425
- Cylinder 4 Deactivation Solenoid Control Circuit
DTC P3441
- Cylinder 6 Deactivation Solenoid Control Circuit
DTC P3449
- Cylinder 7 Deactivation Solenoid Control Circuit
Diagnostic Fault Information
Typical Scan Tool Data
