2020 Honda Accord · symptom sheet
Forward collision warning goes off or the camera drops out
- 32owner reports
- 2involved a crash
Newest report Sep 20, 2026 · checked Oct 2, 2026
32 of the 362 complaints on this car describe false collision warning.
Tick what matches of 32 reports
False collision warning on other Accord 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: 2015, 2016, 2017, 2021, 2022, 2023, 2024, 2025, 2026.
What this problem usually is
This group is about the forward collision warning itself. Owners describe alarms with nothing ahead, a forward camera that fails or reports itself blocked, and other safety features shutting off at the same moment. A lot of them happen at highway speed, and a lot end with a dealer who couldn't reproduce it.
What got replaced
Few of these reports name the part that was replaced.
Recalls and investigations
No recall on collision avoidance covers the 2020 model year as of Oct 2, 2026.
When it happens
Too few of these reports state a mileage to give a range.
Is this a known problem?
The manufacturer has sent NHTSA 1 service bulletin or notice for the 2020 Honda Accord that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
American Honda has identified a condition that may affect Collision Mitigation Braking System (CMBS) operation. Due to software programming issues of the Advanced Driver Assistance System (ADAS), unexpected vehicle deceleration may occur.
What owners wrote
“All of the lights on my dashboard come on every few hours and go off. Vehicle is losing power as I drive. Multiple people with this make and model have expressed their concerns of the same issue.”
Filed Nov 27, 2024
“Collision mitigation message turned on, took it in to dealer and they said sensor was coming up as malfunction and not aligned so they aligned it. Although sensor was aligned emergency brake still brakes without an obstruction in front. It has happened on interstate highway at speed limit where speeds are at 75mph.”
Filed Apr 18, 2024
“Check engine, right mirror, door, alignment. My safety is not good, the car jerks and merging into another lane. Yes it has been inspected by insurance representative. It appeared when I was hit on 02/13/2024”
Filed Mar 11, 2024
“Vehicle was being driven at 38 mph on a road with no other vehicles, bicyclists, pedestrians or other obstructions in sight when the "BRAKE" warning flashed on the dashboard and the brakes were immediately engaged, causing a hard stop. Had there been a vehicle following, it is likely that a rear end collision would have occurred.”
Filed Sep 10, 2023
Should you keep driving it?
This page can't tell you that. 2 of 32 reports involved a crash. 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
- Brakes grind, pulse or wear early 57 reports
- Brakes on its own (automatic emergency braking) 53 reports
- Airbag warning light or recall 35 reports
- Check engine light or misfire 34 reports
- Multiple warning lights come on at once 33 reports
- Engine stalls or loses power while driving 31 reports
- Engine overheats or leaks coolant 28 reports