# 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.

- Type: Service bulletin
- NHTSA id: 10130446
- Published by NHTSA: 2018\-03\-19
- Manufacturer's number: K40245340
- Manufacturer's date: 2018\-02\-28
- NHTSA component: ELECTRICAL 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10130446-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10130446-0001.pdf)

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

## Components

Electrical system

## Trouble codes named

P026C

## Vehicles listed

- 2016 to 2017 MACK CHU
- 2016 to 2017 MACK CXU
- 2016 to 2017 MACK GU
- 2016 to 2017 MACK LEU
- 2016 to 2017 MACK LR
- 2016 to 2017 MACK MRU
- 2016 to 2017 MACK TD

## Recalls for the same vehicles and component

- [2017216](/recalls/tc/2017216.md), 2017-04-19: Electrical
- [17V261000](/recalls/nhtsa/17V261000.md), 2017-04-18: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

## Other bulletins for the same vehicles and component

- [CBR 2171\-11 202511](/bulletins/11026025.md), 2025-12-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. CBR \- Mack Temperature Sensor Troubleshooting Guide
- [CBR 407 072025](/bulletins/11021333.md), 2025-08-04, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM. CBR \- To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded.
- [CBR 2488 072025](/bulletins/11021332.md), 2025-08-04, Service bulletin: ELECTRICAL SYSTEM. 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 202409](/bulletins/11008374.md), 2024-10-03, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. CBR: US17 GHG Common Rail Fuel System Component Electrical Faults \- Model Year 2017 To 2024
- [CBR\-471 202409](/bulletins/11008368.md), 2024-10-03, Service bulletin: ELECTRICAL SYSTEM. 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 202408](/bulletins/11006927.md), 2024-09-04, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. CBR: Diagnostic Trouble Code \(DTC\) U010187\- Lost Communication With TECU
- [CBR\-2350 202407](/bulletins/11005410.md), 2024-08-01, Service bulletin: ELECTRICAL SYSTEM. CBR: Telematics Gateway \(TGW\) Connect Ability Issues
- [CBR\-2383 202406](/bulletins/11003042.md), 2024-07-03, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL. CBR \- Accelerator Pedal: Inspection Instructions
- [CBR\-2350 202402](/bulletins/10251333.md), 2024-03-05, Service bulletin: ELECTRICAL SYSTEM. CBR \-Telematics Gateway \(TGW\) Connect Ability Issues
- [CBR\-2347 202402](/bulletins/10251331.md), 2024-03-05, Service bulletin: ELECTRICAL SYSTEM. CBR \- Active "Set Park Brake" Message On Drivers Information Display \(DID\).

JSON: [/v1/bulletins/10130446](/v1/bulletins/10130446)

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