# Service bulletin 167\-B1704\-02

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: 10115990
- Published by NHTSA: 2017\-08\-25
- Manufacturer's number: 167\-B1704\-02
- Manufacturer's date: 2017\-01\-23
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

SB?17?004 Enhanced engine ECU \(Electronic Control Unit\) software has been made available to address the following conditions: Engine torque reduction has been increased to 70%, from an original 50%, when the engine ECU detects a P244B ? Incomplete Regeneration, in conjunction with the soot level indicator in the instrument cluster reaching 10 bars. Detection threshold change for DTC \(Diagnostic Trouble Code\)P20DF ? Aftertreatment Fuel Injection Line Pressure Sensor Signal Too Low. PTO \(Power Take Off\) control updates. ? Enable DPR \(Diesel Particulate Reduction\) auto regeneration during PTO operation. ? Engine speed will be increased to "Preset PTO engine speed 2" when idle up signal is provided to "PTO SWITCH 2".

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10115990-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10115990-0001.pdf)

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

## Components

Electrical system, Software

## Trouble codes named

P20DF, P244B

## Vehicles listed

- 2011 to 2019 HINO CONVENTIONAL MODELS

JSON: [/v1/bulletins/10115990](/v1/bulletins/10115990)

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