# Service bulletin CBR\-2391 202408

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.

- Type: Service bulletin
- NHTSA id: 11006927
- Published by NHTSA: 2024\-09\-04
- Manufacturer's number: CBR\-2391 202408
- Manufacturer's date: 2024\-08\-06
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

CBR: Diagnostic Trouble Code \(DTC\) U010187\- Lost Communication With TECU

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11006927-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11006927-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Transmission and driveline

## Trouble codes named

U0101

## Vehicles listed

- 2017 MACK ANTHEM \(AN\)
- 2018 to 2024 MACK ANTHEM \(AN\)
- 2017 to 2018 MACK CHU
- 2017 to 2018 MACK CXU
- 2019 to 2024 MACK GRANITE \(GR\)
- 2017 to 2019 MACK GRANITE \(GU\)
- 2017 MACK LEU
- 2017 to 2024 MACK LR
- 2025 MACK LRBE \(ELECTRIC\)
- 2025 MACK MD
- 2025 MACK MD \(ELECTRIC\)
- 2025 MACK MD \(GASOLINE\)
- 2017 to 2018 MACK MRU
- 2018 to 2024 MACK PINNACLE \(PI/PN\)
- 2017 to 2019 MACK TD
- 2017 to 2024 MACK TERRAPRO \(TE\)

## Recalls for the same vehicles and component

- [2026108](/recalls/tc/2026108.md), 2026-03-11: Powertrain
- [24V792000](/recalls/nhtsa/24V792000.md), 2024-10-23: ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [2024194](/recalls/tc/2024194.md), 2024-03-27: Electrical
- [24V232000](/recalls/nhtsa/24V232000.md), 2024-03-27: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
- [2023630](/recalls/tc/2023630.md), 2023-11-22: Electrical
- [23V310000](/recalls/nhtsa/23V310000.md), 2023-05-02: ELECTRICAL SYSTEM:HORN
- [2023021](/recalls/tc/2023021.md), 2023-01-24: Electrical
- [19V047000](/recalls/nhtsa/19V047000.md), 2019-01-21: POWER TRAIN:CLUTCH ASSEMBLY
- [18V152000](/recalls/nhtsa/18V152000.md), 2018-03-06: INTERIOR LIGHTING; VISIBILITY:WINDSHIELD WIPER/WASHER; EXTERIOR LIGHTING; ELECTRICAL SYSTEM
- [2017216](/recalls/tc/2017216.md), 2017-04-19: Electrical

## Other bulletins for the same vehicles and component

- [TSB M\-913\-001 202609](/bulletins/11037730.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Parker engine\-mounted hydraulic pump service bulletin.
- [CBR 159 202608](/bulletins/11036580.md), 2026-09-01, Service bulletin: ELECTRICAL SYSTEM. Mack Trucks Equipped With A Cummins Engine \- Engine Preheat Icon Does Not Illuminate In The Instrument Cluster \(IC\) During Engine Pre\-heat \(Intake Air Heater\) Operation \- Vehicles With 2018Instrument Cluster Update, Model Year2018 And Newer
- [CBR 2573\-1 202604](/bulletins/11032092.md), 2026-05-05, Service bulletin: POWER TRAIN. CBR \- Mack Chassis \- Through Shaft Bearing Retainer Breakage On Mack Carriers.
- [CBR 2362\-3 202604](/bulletins/11032086.md), 2026-05-04, Service bulletin: POWER TRAIN. CBR \- Mack Carrier Nut Adhesive Change.
- [TSB M\-432\-002A 032026](/bulletins/11030591.md), 2026-04-02, Service bulletin: POWER TRAIN. TSB \- Cable, Gear Selector, Replacement
- [CBR 2218\-6 032026](/bulletins/11030582.md), 2026-04-02, Service bulletin: POWER TRAIN. CBR \- Parker F3 Hydraulic Pump Troubleshooting.
- [CBR 2712\-7 032026](/bulletins/11030579.md), 2026-04-02, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. CBR \- No Start Condition After Over the Air Programing.
- [CBR 126 022026](/bulletins/11029445.md), 2026-03-03, Service bulletin: ELECTRICAL SYSTEM. CBR \- The purpose of this solution is to give information on Engine Control Module \(EMS\) Software content.
- [CBR 2128\-7 202601](/bulletins/11028033.md), 2026-02-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. CBR \- Engine Control Module \(EMS\) Software Information \- Improvement List \(Change Log\), US21\+OBD2021 Emissions ONLY
- [CBR 2495\-4 202511](/bulletins/11026031.md), 2025-12-03, Service bulletin: ELECTRICAL SYSTEM. CBR \- Carb 24 Phase 1 \- 48V Diagnostics Guide.

JSON: [/v1/bulletins/11006927](/v1/bulletins/11006927)

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