2021 Nissan Sentra: Forward Collision Avoidance complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 40 owner complaints for the 2021 Nissan Sentra that list the forward collision avoidance component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11773155 (filed 10/23/2026): “The contact owns a 2021 nissan sentra. the contact stated that while her son was driving at approximately 30-35 mph, a yellow triangle warning light illuminated, and the vehicle independently applied the brakes forcefully and made a sharp left turn. the vehicle then rolled over twice and landed upsi…”
- NHTSA complaint ODI #11768165 (filed 09/30/2026): “I purchased this vehicle brand new in 2021. since then, i have experienced a very concerning safety issue on multiple occasions involving the automatic emergency braking system. while driving normally, with the vehicle operating without any apparent problems, the emergency braking system has sudden…”
- NHTSA complaint ODI #11751232 (filed 07/18/2026): “My 2021 nissan sentra has experienced multiple false automatic emergency braking (phantom braking) events where the vehicle suddenly applies the brakes despite there being no vehicle, pedestrian, or obstacle in its path. this issue occurred before and after my vehicle was serviced by autonation nis…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Varies
Depends on the specific failure; get a diagnosis first. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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Sources
Page last updated .