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Service bulletins for the 2022 Peterbilt 579

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

110 on file from NHTSA, as of 2026-10-19.

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By component

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
E3182025-07-02. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. Newly designed fuel injectors are available for EPA2021 compliant PACCAR MX-series engines to optimize engine performance. Injectors must be replaced as a full set (6 injectors) and associated software must be updated at the same time.
E3272025-03-04. Emissions. ELECTRICAL SYSTEM; ENGINE. "Vehicles equipped with PACCAR MX engines with Engine Software Version NA202 or NA206 may display a dash STOP lamp incorrectly. PCI-2 software on these chassis must be reverted from NA202 to NA201 (Pack 2 injectors) or from NA206 to NA191 (Pack 1 injectors) to prevent incorrect STOP lamp display.
32-0252024-12-03. Service bulletin. ENGINE. Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary starter replacements and associated warranty claims. Engine starting system warranty claims now require a completed Starter Checklist, a Battery Pack Midtronics Report, and a Cable Drop Midtronics Report. Claims filed without these documents may be denied.
E3162024-09-10. Service bulletin. ENGINE. Bulletin updated to include oil pan drain plug in parts list and incorporated QR code to direct dealers to informational resources for new Programmable Torque Tool.
CE0192024-08-03. Service bulletin. ENGINE. 07/24/2024 - Updated the Emissions Warranty Coverage tables. Added new coverage tables and PartsLists for GHG/Vehicle Parts and ZEP/BEV Parts. 03/07/2022 - New Emissions bulletin which consolidates older versions and accounts for new CARBemissions requirements that go into effect with Engine Model Year 2022.
E2902023-12-02. Service bulletin. ENGINE AND ENGINE COOLING. Updated procedures and SRT time to include Fuel Filter replacement during cleaning process. Removed in-tank additive references.
E292 PB2023-11-10. Service bulletin. ENGINE AND ENGINE COOLING. Campaign Certain EPA2021 chassis equipped with PACCAR MX engines have Selective Catalytic Reduction (SCR) Catalyst contamination that occurred during manufacturing. SCR Catalyst assemblies will be inspected and replaced as necessary.
45-0652023-11-10. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Certain 579 MLU chassis equipped with Cummins X15 engines have fan hub bracket hardware that are incorrect for the application and/or under torqued and could become loose and/or fail. Procedures are available to replace and properly torque the hardware.
45-0662023-11-10. Service bulletin. ENGINE AND ENGINE COOLING. A testing procedure has been created for the coolant level sensor on model 520.
45-0652023-10-03. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Certain 579 MLU chassis equipped with Cummins X15 engines have fan hub bracket hardware that are incorrect for the application and/or under torqued and could become loose and/or fail. Procedures are available to replace and properly torque the hardware.
01-0792023-07-05. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; VISIBILITY; ENGINE AND ENGINE COOLING. Fix-as-Fail - HVAC Intermittently Stops Blowing Cold Air
E3002023-05-05. Service bulletin. ENGINE AND ENGINE COOLING. PACCAR will reimburse customers for the local purchase of in-tank fuel additive for EPA2021 compliant MX engines. This is a one-time reimbursement. Only customers who have received E290 injector cleaning qualify for this reimbursement. See bulletin for limits and purchase tracking requirements.
E2902023-05-05. Service bulletin. ENGINE AND ENGINE COOLING. FIX-AS-FAIL – Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information.
03-087(E295)2023-03-01. Service bulletin. ENGINE AND ENGINE COOLING. 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 are vised sensor strategy is developed.
45-0642022-11-02. Service bulletin. ENGINE AND ENGINE COOLING. Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to deliver secure software updates remotely. This will reduce downtime and save on maintenance costs for eligible vehicles.
E2972022-08-04. Service bulletin. ENGINE AND ENGINE COOLING. When updating the software on a truck to RC6 or higher, please ensure a PM sensor is physically installed before performing the software update.
E2872022-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Emissions Recall - Distance With MIL On and Distance Since DTC Cleared counters read zero when viewed in DAVIE4 (DM21). Slow or no response from PCI-2 when requesting freeze frame data using DAVIE4 (DM25).
42-0602022-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Fix-As-Fail – If a customer comes into your dealership and demonstrates the condition above, replace the fan clutch adapter harness with the improved harness and clear the DTCs.
E2852022-05-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Emissions Recall: Engine Model Year 2021 MX engines built to EPA 21 emission standards (MY21B) and manufactured without a Particulate Matter (PM) sensor are required to have a PM sensor installed and the engine software updated. This is required for chassis to comply with current emissions standards.
E2902022-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on the EPA21 MX fuel injector cleaning procedure and includes suggested fuel system cleaning fluids. This procedure also provides information to determine if it is necessary to replace the fuel injectors.
E2862022-04-05. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS; ENGINE AND ENGINE COOLING; EQUIPMENT. Fix-As-Requested - Engine Model Year 2021B and later PACCAR MX-11 & MX-13 Fuel Injector Adjustment During First C Service
21PBB2021-04-06. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Safety Campaign - Cummins Engine Flywheel Capscrews improperly torqued. Cummins Recall C2402.
32-0182021-03-10. Service bulletin. ENGINE AND ENGINE COOLING. Non-Safety Campaign – Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.