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Service bulletin EF-E10034

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 id10033754
Published by NHTSA2010-09-17
Manufacturer's numberEF-E10034
Manufacturer's date2010-04-02
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

CUMMINS: CONNECTOR WATER INTRUSION CAUSING MULTIPLE DATA LINK AND/OR AFTERTREATMENT OUTLET NOX SENSOR FAULT CODES. COMPLAINTS OF READ STOP ENGINE LIGHT, YELLOW CHECK ENGINE LIGHT AND FOR ON-BOARD DIAGNOSTICS EQUIPPED ENGINES, THE MALFUNCTION INDICATOR LIGHT MAY ILLUMINATE, DEPENDING ON THE ACTIVE FAULT CODES. ENGINE MODELS ISB6.7 CM2250, ISC8.3 CM2250, ISL9 CM2250, ISX11.9 CM2250, AND ISX15 CM2250 . INSPECT THE BACK SIDE OF THE AFTERTREATMENT OUTLET NOX SENSOR HARNESS CONNECTOR FOR THE PRESENCE OF WIRE SEALS. *PE

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

Electrical system

Vehicles listed
CUMMINS ISC
CUMMINS ISL
CUMMINS ISX

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