TSB 2042048- — Audi Service bulletin

2042048- is a service bulletin on file with NHTSA for the Audi A4, 1997–2001 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. Vehicle will not communicate with diagnostic scan tool or emissions test equipment. Customers may have issues with vehicle passing state IM emissions test programs because the scan tool cannot communicate with the vehicle. ABS and/or brake lamp(s) will be illuminated in IP…

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
1Vehicle named
5Model years

Vehicles and model years 2042048- names

VehicleModel years
Audi A4 1997, 1998, 1999, 2000, 2001

Every document filed under 2042048-

Document IDFiledType
A451510 2042048- October 5, 2015 Service bulletin

What 2042048- covers

Transmission & drivetrain — the component vocabulary NHTSA files this communication under.

← All Audi A4 TSB years TSB lookup by model

Questions buyers ask

What is TSB 2042048-?

2042048- is a service bulletin filed with NHTSA by Audi, covering the Audi A4 across the 1997–2001 model years. NHTSA's summary reads: Vehicle will not communicate with diagnostic scan tool or emissions test equipment. Customers may have issues with vehicle passing state IM emissions test programs because the scan tool cannot communicate with the vehicle. ABS and/or brake lamp(s) will be illuminated in IP…

Which vehicles does 2042048- cover?

NHTSA's file names Audi A4 (1997–2001). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB 2042048- a recall, and is the repair free?

No. 2042048- is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of 2042048-?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 2042048-, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 2042048-. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.