OVERVIEW
The transmission DTC’s P0974 and P0986, may be found on 12MY-15MY COE models. 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
NOTE: This procedure is provided as technical information and is not an authorization for a warranty repair.
SUBJECT VEHICLES
2012MY – 2015MY Hino COE Trucks with an Aisin Transmission.