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Service bulletin TT-15-014

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 id10184856
Published by NHTSA2020-12-28
Manufacturer's numberTT-15-014
Manufacturer's date2015-04-22
NHTSA componentPOWER TRAIN

NHTSA's summary

2012-2015 COE Transmission DTC P0974 - P0986, may be found on, There could also be a complaint of low power and erratic shifting. These diagnostic codes may be set due to low voltage between the transmission case and the battery post.

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

Transmission and driveline

Trouble codes named

P0974, P0986

Vehicles listed
HINO CONVENTIONAL MODELS2012 to 2015

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