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Service bulletin K40245340

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10130446
Published by NHTSA2018-03-19
Manufacturer's numberK40245340
Manufacturer's date2018-02-28
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Diagnostic Trouble Code ( DTC ) P026C Lighting The Malfunction Indicator Light ( MIL ) - OBD15 And US14+OBD16 (Non-Common Rail Fuel System) Chassis

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Trouble codes named

P026C

Vehicles listed
MACK CHU2016 to 2017
MACK CXU2016 to 2017
MACK GU2016 to 2017
MACK LEU2016 to 2017
MACK LR2016, 2017
MACK MRU2016 to 2017
MACK TD2016 to 2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20172162017-04-19. Electrical
17V2610002017-04-18. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
CBR 2171-11 2025112025-12-03. Service bulletin. CBR - Mack Temperature Sensor Troubleshooting Guide
CBR 407 0720252025-08-04. Service bulletin. CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded.
CBR 2488 0720252025-08-04. Service bulletin. CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data.
CBR-570 2024092024-10-03. Service bulletin. CBR: US17 GHG Common Rail Fuel System Component Electrical Faults - Model Year 2017 To 2024
CBR-471 2024092024-10-03. Service bulletin. CBR: The procedure to eliminate the Mack Chassis "Air Restriction Light On" seen in the cluster is to confirm that the parameter YYT is set to "Enable" with Premium Tech Tool.
CBR-2391 2024082024-09-04. Service bulletin. CBR: Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU
CBR-2350 2024072024-08-01. Service bulletin. CBR: Telematics Gateway (TGW) Connect Ability Issues
CBR-2383 2024062024-07-03. Service bulletin. CBR - Accelerator Pedal: Inspection Instructions
CBR-2350 2024022024-03-05. Service bulletin. CBR -Telematics Gateway (TGW) Connect Ability Issues
CBR-2347 2024022024-03-05. Service bulletin. CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).