TSB M120126 — Mini Emissions communication
M120126 is an emissions communication on file with NHTSA for the Mini Cooper, 2024–2026 model years, filed and re-filed as 3 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases it may happen that stored fault memory codes (DTCs) and the MIL (warning light) are not automatically deleted even though the underlying malfunction has already been…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years M120126 names
| Vehicle | Model years |
|---|---|
| Mini Cooper | 2024, 2025, 2026 |
Every document filed under M120126
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| M120126 | June 19, 2026 | Emissions communication |
| M120126 | April 2, 2026 | Emissions communication |
| M120126 | March 11, 2026 | Emissions communication |
What M120126 covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB M120126?
M120126 is an emissions communication filed with NHTSA by Mini, covering the Mini Cooper across the 2024–2026 model years. NHTSA's summary reads: Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases it may happen that stored fault memory codes (DTCs) and the MIL (warning light) are not automatically deleted even though the underlying malfunction has already been…
Which vehicles does M120126 cover?
NHTSA's file names Mini Cooper (2024–2026). 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 M120126 a recall, and is the repair free?
No. M120126 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 M120126?
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 M120126, 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 M120126. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.