2020 Honda Odyssey · symptom sheet
Brakes on its own (automatic emergency braking)
- 98owner reports
- 51,000median miles
- $2,000median quote
- 1involved a crash
Newest report Sep 27, 2026 · checked Oct 2, 2026
190 of the 473 complaints on this car are about collision avoidance. 98 of those describe phantom braking.
Tick what matches of 98 reports
Phantom braking on other Odyssey years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2015, 2016, 2021, 2022, 2023, 2024, 2025, 2026.
What this problem usually is
Phantom braking is a car that brakes hard on its own, often at highway speed, with nothing in the road ahead. About one owner in five mentions a near miss with the car behind.
What got replaced
Owners who name the part that was replaced mention the radar or camera sensor (76 reports), the windshield (15 reports) and the software (15 reports).
Recalls and investigations
No recall on collision avoidance covers the 2020 model year as of Oct 2, 2026.
NHTSA investigations into collision avoidance on the Odyssey
Air in brake system. Closed may 11, 2010, led to recall 10V-098.
Air in brake system. Closed oct 19, 2009, led to recall 10V-098.
None of these investigations covers the 2020 model year.
What owners paid
39 of the 98 reports quote a price. Each dot is one quote. The middle half runs $1,300 to $2,104.
When it happens
The middle half of failures fell between 35,000 and 60,000 miles, from the 19 reports that gave a mileage.
What owners wrote
“when I start the car, I get 8 or so warnings: Adaptive cruise control, Automatic emergency braking, forward Collision warning, lane departure warning, lane keeping assistance, etc. the air bag warning for passenger also blinks. the dealer indicates this is a faulty front camera and will require about $2500 to fix it.”
Filed Aug 22, 2026
“adaptive cruise control, lane keep assist system problem, collision mitigation system problem, road departure mitigation system problem and auto high beam problem”
Filed Jul 27, 2026
“I believe the forward facing camera is having electrical issues which is causing the vehicle not to engage lane departure, traction control, Lane keeping assistance, emergency braking, adaptive cruise control, AC intermittently blowing warm and cold. There are four or five lights on the dash about this.”
Filed Jul 16, 2026
“Our vehicle is only a few years old and the front camera failed. It will not do any Automatic Emergency Braking, Forward Collision Warning, etc. Honda refuses to cover this even though it is a manufacturer defect.”
Filed Apr 29, 2024
Should you keep driving it?
This page can't tell you that. 1 of 98 reports involved a crash and 1 people were hurt. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Taking it to a shop? How to describe this problem so it gets found
Other problems on this car
- Adaptive cruise or lane keeping misbehaves 120 reports
- Infotainment, screen or backup camera fails 108 reports
- Forward collision warning goes off or the camera drops out 94 reports
- Engine stalls or loses power while driving 61 reports
- Battery dies or the car will not start 33 reports
- Multiple warning lights come on at once 29 reports