WenmarOpen by Wenmar Pro

Service bulletin L-TT-0278-19

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10170192
Published by NHTSA2020-01-13
Manufacturer's numberL-TT-0278-19
Manufacturer's date2019-12-20
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT

NHTSA's summary

TT: Some 2020 model year vehicles equipped with a DCM may exhibit a B15A804 DTC in current or history during PDS. This DTC can be triggered during the manufacturing and/or shipping process and does not indicate a problem with the vehicle. To simplify the diagnosis of this DTC, refer to the procedure below to prevent unnecessary parts replacement.

The document

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

Electrical system, Equipment and accessories

Trouble codes named

B15A8

Vehicles listed
LEXUS ES HYBRID2020
LEXUS ES3502020
LEXUS NX HYBRID2020
LEXUS NX3002020
LEXUS RX HYBRID2020
LEXUS RX3502020
LEXUS UX HYBRID2020
LEXUS UX2002020

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