# Service bulletin 167\-R1503\-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: 10116045
- Published by NHTSA: 2017\-08\-25
- Manufacturer's number: 167\-R1503\-12
- Manufacturer's date: 2015\-07\-01
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

AA0H0 A subject vehicle may exhibit an illuminated MIL \(Malfunction Indicator Lamp\) with DTC \(Diagnostic Trouble Code\) P0421 \(ATC Deterioration Monitoring\). The engine ECU may falsely detect an issue with the ATC \(After Turbo Catalyst\). Enhanced ECU software is available.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10116045-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10116045-0001.pdf)

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

## Components

Electrical system, Software

## Trouble codes named

P0421

## Vehicles listed

- 2015 HINO ND8J
- 2015 HINO NE8J

JSON: [/v1/bulletins/10116045](/v1/bulletins/10116045)

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