# Service bulletin 167\-B1604\-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.

- Type: Service bulletin
- NHTSA id: 10117704
- Published by NHTSA: 2017\-09\-14
- Manufacturer's number: 167\-B1604\-12
- Manufacturer's date: 2016\-07\-14
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

SB\-16\-016 Enhanced DCU \(Dosing Control Unit\) software has been released to address the following conditions: Illumination of the check engine light. The DCU may falsely detect an issue and record any of the 3 following DTC?s in the DCU. P142A\(DEF pump temperature sensor \- Out of range\) P204B\(DEF pressure sensor ? Rationality\) P20A1\(Reverting valve for DEF pump stuck close\) In rare cases, the completion of the after\-run process might be mistakenly aborted. This occurs when the ignition key is cycled back on and then off prior to after\-run completion. If this occurs when ambient temperatures are below freezing and the urea is allowed to fully freeze, internal damage to the DEF pump may occur. Once damaged, urea could migrate into the DEF pump electrical connector and SCR harness resulting in corrosion. This corrosion could result in detection of any combination of SCR\(Selective Catalyst Reductant\) DTC?s including but not limited to: P142A\(DEF pump temperature sensor \- Out of range\) P208A\(DEF pump motor circuit \- Open load\) P208B\(DEF pump motor \- Functional\) The enhanced DCU software prevents the after\-run process from being aborted prior to completion.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10117704-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10117704-0001.pdf)

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

## Components

Electrical system, Software

## Trouble codes named

P142A, P204B, P208A, P208B, P20A1

## Vehicles listed

- 2013 HINO JHD2
- 2013 to 2017 HINO JHP2

JSON: [/v1/bulletins/10117704](/v1/bulletins/10117704)

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