# Service bulletin T1379

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: 10085564
- Published by NHTSA: 2016\-12\-06
- Manufacturer's number: T1379
- Manufacturer's date: 2013\-07\-19
- NHTSA component: ENGINE; FUEL SYSTEM, DIESEL

## NHTSA's summary

THIS TEMPORARY REPAIR PRACTICE ADDRESSES FAULT CODE 3569 OCCURRENCES ON ENGINES IN ALL PETERBILT VEHICLES WITH A PARTICULAR EXHAUST/AFTERTREATMENT CONFIGURATION. THIS ACTION WILL MITIGATE FAILURES CAUSED BY UREA CRYSTALLIZATION INSIDE THE DIESEL EXHAUST FLUID \(DEF\) DOSING VALVE.

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine, Fuel system

## Vehicles listed

- CUMMINS ISX12
- CUMMINS ISX15

JSON: [/v1/bulletins/10085564](/v1/bulletins/10085564)

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