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Service bulletin ATC2405C

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10235485
Published by NHTSA2023-05-03
Manufacturer's numberATC2405C
Manufacturer's date2023-04-25
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This ATC is being issued to address sealing robustness on air compressor inlet plumbing on certain X15engines. The following are the 3 components being addressed: 1. Turbocharger inlet to turbocharger adapter interface, and 2. Air compressor inlet plumbing O-rings, and 3. Hose clamp at resonator box (ONLY for engines equipped with CI1034 option). This calibration contains improvements that may reduce false occurrences of Fault Code 555 & 556. This is an update to the previously submitted communication.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
CUMMINS X15

Listing a model year does not mean every vehicle of it is concerned: the document says which.