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Service bulletin SB-426

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 id10058406
Published by NHTSA2015-09-16
Manufacturer's numberSB-426
Manufacturer's date2015-06-10
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

MOTOR COACH IND.: INFORMATION PROVIDED REGARDING SOME MOTOR COACHES WITH INCORRECT ENGINE COOLANT SENSOR INSTALLED WHICH MAY AFFECT OPTIMUM ENGINE PERFORMANCE AND NEED TO BE CORRECTED. MODEL J4500. NO MODEL YEARS LISTED. *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

Engine

Vehicles listed
MCI J45002011 to 2015

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