TSB NTB21-115B — Nissan Service bulletin
NTB21-115B is a service bulletin on file with NHTSA for 3 Nissan models, 2020–2023 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. FALSE ACTIVATION OF AEB OR FCW APPLIED VEHICLES: 2021-2022 Altima (L34) 2022-2023 Frontier (D41) 2020-2022 Sentra (B18) APPLIED DATES: Altima: All Frontier: All Sentra: Built on or before March 10, 2022 APPLIED SYSTEMS: Automatic Emergency Braking/Forward Collision Warning IF…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years NTB21-115B names
| Vehicle | Model years |
|---|---|
| Nissan Altima | 2021, 2022 |
| Nissan Frontier | 2022, 2023 |
| Nissan Sentra | 2020, 2021, 2022 |
Every document filed under NTB21-115B
| Document ID | Filed | Type |
|---|---|---|
| NTB21-115B | July 11, 2024 | Service bulletin |
What NTB21-115B covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB NTB21-115B?
NTB21-115B is a service bulletin filed with NHTSA by Nissan, covering 3 Nissan models across the 2020–2023 model years. NHTSA's summary reads: FALSE ACTIVATION OF AEB OR FCW APPLIED VEHICLES: 2021-2022 Altima (L34) 2022-2023 Frontier (D41) 2020-2022 Sentra (B18) APPLIED DATES: Altima: All Frontier: All Sentra: Built on or before March 10, 2022 APPLIED SYSTEMS: Automatic Emergency Braking/Forward Collision Warning IF…
Which vehicles does NTB21-115B cover?
NHTSA's file names Nissan Altima (2021–2022); Nissan Frontier (2022–2023); Nissan Sentra (2020–2022). 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 NTB21-115B a recall, and is the repair free?
No. NTB21-115B 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 NTB21-115B?
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 NTB21-115B, 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 NTB21-115B. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.