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Service bulletin TSB_2078871_2

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 id11028470
Published by NHTSA2026-02-06
Manufacturer's numberTSB_2078871_2
Manufacturer's date2026-01-30
NHTSA componentENGINE

NHTSA's summary

This bulletin provides information when the engine warning lamp (MIL) is on - DTC U041800.

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

Engine

Trouble codes named

U0418

Vehicles listed
AUDI A52025, 2026
AUDI A62026
AUDI Q52025, 2026
AUDI Q5 SPORTBACK2025 to 2026
AUDI S52025, 2026
AUDI SQ52025, 2026
AUDI SQ5 SPORTBACK2025, 2026 (the catalog's model; the bulletin names a series or trim of it)

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

Other bulletins for the same vehicles and component
TSB_2083393_12026-10-05. Service bulletin. This bulletin provides information when the starter/generator drive belt is noisy or came off.
TSB_2083287_12026-10-05. Service bulletin. This Pending Service Solution (PSS) requests that technicians create a record in the PSS database when DTC P001400 camshaft position is stored.
TSB_2081030_42026-10-05. Service bulletin. This bulletin provides information when there is an abnormal knocking noise from the engine compartment; V6 3.0L TFSI.
TSB_2079927_32026-10-05. Service bulletin. This bulletin provides information when the exhaust emissions warning lamp lights up; DTC P050A; 2.0 ltr 4-cyl.
TSB_2079911_42026-10-05. Service bulletin. This bulletin provides information when the MIL is on; DTC P050600 with Symptom 4008 stored in ECM V6 TFSI.
TSB_2078914_62026-10-05. Service bulletin. This bulletin provides information when the MIL is on; DTC P064F00 stored in the ECM.
TSB_2078849_32026-10-05. Service bulletin. This bulletin provides information regarding an oil change when replacing the engine control unit.
TSB_2069531_22026-10-05. Service bulletin. This bulletin provides information when the MIL is on, EVAP pressure/temp sensor incorrect DTC displayed: P202400, P045000, P045200, P24D600, P24D800, P2B7B00.
TSB_2083125_12026-09-04. Service bulletin. This Pending Service Solution (PSS) requests that technicians create a record in the PSS database when there is a drive system fault; fuel pressure sensor malfunction P119A and/or P119B - 3.0 ltr V6 TFSI.
TSB_2083001_12026-09-04. Service bulletin. This bulleti provides informaoitn when there is a fuel pressure sensor malfunction, drive system DTC P119A/P119B - 3.0L V6 TFSI.