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Service bulletin 167-R1506-12

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 id10116048
Published by NHTSA2017-08-25
Manufacturer's number167-R1506-12
Manufacturer's date2015-01-26
NHTSA componentENGINE

NHTSA's summary

AA030 Hybrid vehicles may sometimes produce a perceptible level of vibration when the engine is activated. The following procedure provides instruction for replacement of the HV ECU with an enhanced ECU which delays the initial combustion until after the engine reaches a certain speed.

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
HINO JHP22013 to 2015

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