# Service bulletin 21PBN

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: 10227172
- Published by NHTSA: 2022\-12\-05
- Manufacturer's number: 21PBN
- Manufacturer's date: 2022\-11\-07
- NHTSA component: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; ELECTRICAL SYSTEM

## NHTSA's summary

21PBN – LNG/CNG Methane Detecti on System Will Not Warn Operator if System Loses Power – NHTSA ID:21V00N, TC: 2021\-793

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10227172-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10227172-9999.pdf)

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

## Components

Electrical system, Fuel system, Fuel tank

## Vehicles listed

- 2020 to 2021 PETERBILT 536
- 2022 PETERBILT 536
- 2016 to 2022 PETERBILT 567
- 2016 to 2022 PETERBILT 579

## Recalls for the same vehicles and component

- [23V653000](/recalls/nhtsa/23V653000.md), 2023-09-27: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY

## Other bulletins for the same vehicles and component

- [21PBN](/bulletins/10207154.md), 2022-02-04, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; ELECTRICAL SYSTEM; EQUIPMENT. Interim Safety Recall – Methane detection system will not warn the operator if the system loses power. The driver could be unaware of an issue with the methane detection system or excessive methane present, increasing the risk of a fire, crash and/or personal injury. The repair procedure will be added when it is available.

JSON: [/v1/bulletins/10227172](/v1/bulletins/10227172)

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