# Service bulletin SB\-15\-030

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: 10184829
- Published by NHTSA: 2020\-12\-28
- Manufacturer's number: SB\-15\-030
- Manufacturer's date: 2015\-07\-07
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

## NHTSA's summary

DTC U02A2 DEF sensor communication error. On subject vehicles, the MIL \(Malfunction Indicator Lamp\) may illuminate with DTC \(Diagnostic Trouble Code\) U02A2 stored in the engine ECU. This may be due to a malfunction of the DEF \(Diese Exhaust Fluidf\) tank sensor asslembly. Perform the diagnostic prolcedure for DT C U02A2 as outlined by the Workshop Manual \(DEF SCR Section for Conventional Vehicles, Engine Troiubleshooting Section for COE Vehicles\). If the diagnostic procedure leads to DEF tank sensor replacement, a more robust DEF tank sensor has been made available. Conventional Trucks \(238, 258, 268 and 338\) and COE \(Cab Over Engine\) Trucks \(195, 195h\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10184829-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10184829-9999.pdf)

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

## Components

Engine, Equipment and accessories, Exhaust and emissions, Fuel system

## Trouble codes named

U02A2

## Vehicles listed

- 2014 to 2015 HINO 195H
- 2014 to 2015 HINO 238
- 2014 to 2015 HINO 258
- 2014 to 2015 HINO 268
- 2014 to 2015 HINO 338
- 2014 to 2015 HINO CAB\-OVER
- 2014 to 2015 HINO CONVENTIONAL TRUCKS W/JO8

JSON: [/v1/bulletins/10184829](/v1/bulletins/10184829)

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