Service bulletin TSB150089-102020

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.

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of some cases in which the aftertreatment Diesel Exhaust Fluid (DEF) dosing lines are not being fully purged during the purge cycle. This can result in internal cracking of the aftertreatment DEF dosing unit and leakage of DEF. A revised backflow connector for the Bosch® aftertreatment DEF dosing unit has been released and will help to fully purge DEF from the DEF dosing lines and aftertreatment DEF dosing unit during the purge cycle. This is a revision to a previous communication.

The document

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Components

Fuel system

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