TECHNICAL SERVICE BULLETIN
Illuminated MIL With DTCs P3426, P3402, P3450, And/Or P3442 Stored In
The PCM

26-2093
11 March
2026

This bulletin supersedes 25-2487. Reason for update: update the symptoms in the TSB title and issue, and update
the parts list to include additional parts for the repair
Model:
Ford
2025 F-150

Built on 1-Jan-2025 and through 30-Apr-2025
Engine: 5.0L

Markets: North American markets only
Issue: Some of the vehicles listed in the Model Section above may exhibit an illuminated MIL with DTCs P3426,
P3402, P3450, And/Or P3442 stored in the PCM. This may be due to a restriction in the cylinder deactivation
solenoid oil feed tube.
Action: For vehicles that meet all of the criteria in the Issue and Model statements, follow the Service Procedure to
replace the affected cylinder deactivation solenoid oil feed tube.
Parts - Parts To Replace The Left Side Deactivation Solenoid Oil Feed Tube
Service Part
Number

Claim
Quantity

ML3Z-6K602-B

1

ML3Z-6584-C

1

ML3Z-6584-F

1

TA-357

As Needed

Number in
Package

Description

Note

Left-Oil Tube
Left-Valve Cover Gasket

Vehicles with single
generator

Left-Valve Cover Gasket

Vehicles with dual
generator

Motorcraft® High Performance Engine
RTV Silicone

Parts - Parts To Replace The Right Side Deactivation Solenoid Oil Feed Tube
Service Part
Number

Claim
Quantity

Number in
Package

Description

Note

ML3Z-6K602-A

1

Right-Oil Tube

ML3Z-6584-B

1

Right-Valve Cover Gasket

JR3Z-9276-B

1

Right-Valve Cover Inner Gasket

ML3Z-9J323-B

1

High Pressure Fuel Tube

JT4Z-9E583-A

1

High-Pressure Fuel Pump O-Ring Seal

TA-357

As Needed

Motorcraft® High Performance Engine
RTV Silicone

VC-13-G

As Needed

Motorcraft® Yellow Concentrated
Antifreeze/Coolant

All Markets Except
Canada

CVC-13-G

As Needed

Motorcraft® Yellow Concentrated
Antifreeze/Coolant

Canada Only

Parts - Parts To Inspect And Replace Only If Necessary
Service Part
Number

Claim Quantity

Package Order
Quantity

Description

ML3Z-6C535-A

Only If Necessary (Up To 8), 4
per side

VCT Seal

ML3Z-6C535-B

Only If Necessary (Up To 8), 4
per side

Spark Plug Seal

JL3Z-9439-A

Only If Necessary (Up To 8)

Intake Manifold Gasket

W718564-S450

Only If Necessary (Up To 2)

High Pressure Fuel Pump Mounting
Studs

Claim Quantity refers to the total number of individual pieces required to repair the vehicle. This may differ from the
number of service part number packages due to the unit of issue (UOI).
As Needed indicates the part is necessary but amount of the part may vary and/or is not a whole number. Parts can
be billed out as non-whole numbers, including less than 1.
Only If Necessary indicates the part is not mandatory. Refer to the Service Procedure to determine the
inspection/inclusion criteria.
Warranty Status: Warranty coverage limits and policies are not altered by a TSB. Warranty coverage limits are
determined by the identified causal part.
Labor Times
Operation
No.

Description

Time

2025 F-150 5.0L: Retrieve DTCs, Replace Right Oil Feed Tube, Includes To Remove And
Install Valve Cover (Can be claimed with D)

262093A

3.6
Hrs

2025 F-150 5.0L: Retrieve DTCs, Replace Left Oil Feed Tube, Includes To Remove And
Install Valve Cover (Can be claimed with D)

262093B

1.3
Hrs

2025 F-150 5.0L: Retrieve DTCs, Replace Both Right And Left Oil Feed Tubes, Includes To
Remove And Install Valve Covers (Can be claimed with D)

262093C

4.6
Hrs

262093D

0.4
Hrs

Additional Time If Equipped With Dual Generators (Can be claimed with A or B or C)
Repair/Claim Coding
Causal Part:

6K602

Condition Code: 17

Service Procedure
1. For DTCs P3402 and/or P3426, replace the right side cylinder deactivation solenoid oil feed tube.
1. Remove the right valve cover. Refer to the WSM, Section 303-01D > Removal and Installation >
Valve Cover RH > Removal > Steps 1-13.
2. Remove and replace the right cylinder deactivation solenoid oil feed tube. Refer to the WSM, Section
303-01D > Removal and Installation > Camshaft RH > Removal > Steps 1-13.
3. Install the right valve cover. Refer to the WSM, Section 303-01D > Removal and Installation > Valve
Cover RH > Installation > Steps 1-12.
2. For DTCs P3442 and/or P3450, replace the left side cylinder deactivation solenoid oil feed tube.
1. Remove the left valve cover. Refer to the WSM, Section 303-01D > Removal and Installation > Valve
Cover LH > Removal > Steps 1-11 for single generator or 1-14 for dual generator equipped vehicles.
2. Remove and replace the left cylinder deactivation solenoid oil feed tube. Refer to the WSM, Section
303-01D > Removal and Installation > Camshaft LH > Removal > Step 2 only.
3. Install the left valve cover. Refer to the WSM, Section 303-01D > Removal and Installation > Valve
Cover LH > Installation > Steps 1-12 for single generator or 1-14 for dual generator equipped vehicles.

© 2026 Ford Motor Company
All rights reserved.
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and
equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information
that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition
described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy
and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article.
The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede
this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.