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Service bulletin A0123972072121_1

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 id10245610
Published by NHTSA2023-12-06
Manufacturer's numberA0123972072121_1
Manufacturer's date2023-11-20
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING

NHTSA's summary

This bulletin provides information for when the MIL/EPC light is illuminated, DTC P042000 or P043000, Catalyst system, bank 1 or 2 efficiency below thresh hold.

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, Engine, Software

Trouble codes named

P0420, P0430

Vehicles listed
AUDI A52014, 2015
AUDI A5 CABRIOLET2014 to 2015
AUDI RS 5 CABRIOLET2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
AUDI RS52014, 2015
AUDI S52014, 2015
AUDI S5 CABRIOLET2014 to 2015

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

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