TSB 2078939 — Audi Service bulletin
2078939 is a service bulletin on file with NHTSA for the Audi A4, 2021–2024 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This bulletin provides information when there DTC P218500 is stored in temerature sender G83.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 2078939 names
Every document filed under 2078939
| Document ID | Filed | Type |
|---|---|---|
| TSB_2078939_2 | June 30, 2026 | Service bulletin |
What 2078939 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 2078939?
2078939 is a service bulletin filed with NHTSA by Audi, covering the Audi A4 across the 2021–2024 model years. NHTSA's summary reads: This bulletin provides information when there DTC P218500 is stored in temerature sender G83.
Which vehicles does 2078939 cover?
NHTSA's file names Audi A4 (2021–2024). 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 2078939 a recall, and is the repair free?
No. 2078939 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 2078939?
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 2078939, its date, and NHTSA's own summary from the public file.
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 2078939. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.