NHTSA ID Number: 10232496
Manufacturer Communication Number: 03-087 (E295)
TSB/Document Date: 2023-03-06
Summary
Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor strategy is developed.
03-087: Model Year 2021-2024 T680, T880, and W990
Optional Fuel Filter Restriction Display Incorrect
2/27/2023 7 edit © Clone
03-087
Model Year 2021-2024 T680, T880, and W990 Optional Fuel Filter Restriction Display Incorrect
Subject
Model Year 2021-2024 T680, T880, and W990 Optional Fuel Filter Restriction Display Incorrect
Whats New Abstract
Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual
gauge display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor
strategy is developed.
Revision
2/27/23: Updated Causal Part in PRWS Claim Coding Table
Condition
The optional fuel restriction display may show 100% restriction when the filter is not restricted, and no other
fuel system pressure faults are present.
Chassis Affected
Certain Model Year 2021-2024 T680 NextGen, T880, and W990 trucks built from 05/20/2020 through
12/02/2022 equipped with PACCAR MX engines, the fuel restriction sensor, and virtual gauge enabled on the
Digital Display.
Action
Fix-As-Requested
If a customer comes into your dealership and demonstrates the condition above:
1. Follow the instructions below to check for fuel pressure-related faults.
If active fuel pressure codes are present, troubleshoot and repair as a separate event. Once active codes
have been resolved, continue below.
cr NOTE
This bulletin does not cover troubleshooting and
repair of fuel pressure-related faults. File separate
claim(s) for troubleshooting or repair tasks if
necessary.
2. Program software to the chassis to temporarily remove the fuel restriction gauge display.
A CAUTION
Fuel filter service intervals MUST be followed to
prevent fuel system faults. Use only good quality
fuel and follow all recommended service intervals
listed in operator and service manuals.
Warranty
Through Standard Warranty or any applicable active Extended Warranty, Kenworth will pay for labor:
* 0.3 hours to check for active fuel-related fault codes and reprogram Digital Display. Use Quick Claim
code 03087A.
© Troubleshooting and repair of active fuel pressure faults are not covered by this bulletin. File a separate
claim under applicable warranty for troubleshooting and repair of fuel pressure fault codes.
¢ File an additional claim for extraordinary circumstances. A quick claim for standard labor must be filed
first.
© File the claim within 14 days in accordance with Warranty Policy CAQ09.
PRWS CLAIM CODING
Campaign |03087A |Campaign Type |Non-
Code: campaign
Claim Engine |Repair Type Fix-as-
Category: Requested
Customer |151 Causal Code 93
Concern
Code
Corrective |22 Responsibility |Camp
Action Code Code:
Failure 003-001- |Causal Part 2246913
Location 076
Supplier N/A B22-015
Code 0.3 hrs
Check for
fuel-related
SRT Code fault codes
and
reprogram
Digital
Display
Parts
Software only — No Parts Required.
Background
The fuel filter restriction sensor software strategy on certain Model Year 2021-2024 T680, T880, and W990
chassis with PACCAR MX engines is incorrect. This causes the fuel restriction virtual gauge to show high
restriction even when there is no filter restriction present. Reprogramming the Digital Display will temporarily
remove the fuel restriction virtual gauge. A future campaign will be available to re-enable the filter restriction
virtual gauge.
Procedure
Please follow your dealership's safety procedures and precautions to ensure the vehicle can be safely
repaired and maintained.
1. Connect DAVIE4
2. Check for fuel system related faults including:
© Any fuel pressure low fault
© Injector misfire faults
3. If no fuel system faults are found, program the Digital Display using the steps below and release the
vehicle.
4. If active fuel system pressure faults are found, troubleshoot and repair the fuel system using applicable
service manuals.
i] NOTE
Fuel system troubleshooting and repair labor and
parts are not covered by this bulletin. Refer to the
applicable service manuals and any applicable
warranty documentation.
5. Once troubleshooting and repair have been completed, program the Digital Display using the steps
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
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TSB/Document ID: 03-087 (E295)
Replacement Service Bulletin Number:
MFR Communication Date: 2023-02-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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