# Service bulletin C1388B

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: 10085280
- Published by NHTSA: 2016\-12\-01
- Manufacturer's number: C1388B
- Manufacturer's date: 2014\-04\-02
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:DIESEL

## NHTSA's summary

THIS CAMPAIGN ADDRESSES FAULT CODE 3569 OCCURRENCES ON CERTAIN AFTERTREATMENT SYSTEMS THAT MAY LEAD TO FAILED DIESEL EMISSIONS FLUID \(DEF\) DOSING VALVES IN TRANSIT BUS APPLICATIONS. THE REROUTING OF THE DEF SUPPLY LINE AND COOLANT LINES TO THE DOSING VALVE HAS BEEN DETERMINED TO REDUCE FAULT CODE 3569. THIS IS A REVISION TO A PREVIOUS COMMUNICATION.

## 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

## Vehicles listed

- CUMMINS ISL9

JSON: [/v1/bulletins/10085280](/v1/bulletins/10085280)

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