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.

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)
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The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

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

Trouble codes named

U02A2

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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