# Service bulletin IB26\-J\-003

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.

- Type: Service bulletin
- NHTSA id: 11036834
- Published by NHTSA: 2026\-09\-03
- Manufacturer's number: IB26\-J\-003
- Manufacturer's date: 2026\-08\-13
- NHTSA component: ENGINE
- Manufacturer's system: ENGINE

## NHTSA's summary

INFORMATION BULLETIN: TECHNICIANS MAY ENCOUNTER DTC U0101 \(00\) LOST COMMUNICATION WITH TRANSMISSION CONTROL MODULE \(TCM\) STORED IN THE ELECTRONIC HYDRAULIC CONTROL UNIT \(EHCU\) AS A HISTORY CODE. WHEN AN IDLE SHUTDOWN EVENT OCCURS, COMMUNICATION BETWEEN THE TCM AND THE EHCU IS TEMPORARILY SUSPENDED. THIS CAN CAUSE DTC U0101 \(00\) TO SET IN THE EHCU ALTHOUGH THERE IS NO FAULT IN THE SYSTEM.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036834-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036834-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Trouble codes named

U0101

## Vehicles listed

- 2022 to 2025 ISUZU N\-SERIES

JSON: [/v1/bulletins/11036834](/v1/bulletins/11036834)

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