2020 Honda Odyssey Owner Complaints

Auto-stop/start function will randomly fail. Also appears to cause other electrical issues when starting up; complete loss of electrical power.

NHTSA ID

11776570

Incident

Oct 1, 2026

Honda claims they fixed the recall for the MOST communication systems and the FAKRA cables. I have the vehicle and the connectors have not been changed. I called honda and they reefusing to fix the issue after I have priveded them with picture evidence and their repair manual.

NHTSA ID

11775881

Incident

Nov 5, 2026

The contact owns a 2020 Honda Odyssey. The contact stated that upon starting the vehicle in the driveway, the automatic braking system, adaptive cruise control, auto hi-beams, and Lane Keep Assist warning lights illuminated, followed by a beeping sound, and the systems became inoperable. In addition, the multi-point camera was inoperable. The vehicle was taken to the dealer, where an internal failure of the multi-point camera was diagnosed. The vehicle was repaired. The failure mileage was approximately 83,300.

NHTSA ID

11774422

Incident

Oct 15, 2026

Mileage

83,300 mi

Over the course of 3 days, cruise control and lane assist systems would shut off and messages would display about adaptive cruise control, lane keep assist, lane departure warning, and collision avoidance system not working. Sometimes a transmission problem message would also become active. Sometimes the messages would be present at startup but other times the systems would show up green on the display and then the systems would shut off while driving causing the vehicle to suddenly slow down in highway traffic. The root issue seems to be a broken or malfunctioning multipurpose camera for the driver assist system. The camera has not been replaced yet to verify but related codes are active based on a code scanner and symptoms match what is expected for the camera failure. The vehicle is 6 years old with 99,400 miles at the first occurrence of the issue and does not have any windshield damage or signs of water leaking that would contribute to a failure. My primary concern is that the software completely disables cruise control when the camera for adaptive cruise and lane keep assist fails causing the vehicle to suddenly slow down rather than allow normal cruise control to continue operating and display the warning messages.

NHTSA ID

11773838

Incident

Oct 22, 2026

My 2020 Honda Odyssey EX-L intermittently fails to restart after the Auto Idle Stop feature shuts the engine off at a red light or stop. This has happened probably 10 times in the past 6 months. In order to start the engine, I must recognize that the engine isn't starting, turn off the vehicle, and turn it back on, often 2-3 times before it actually starts. This leaves the vehicle stopped in a traffic lane at an intersection with traffic trying to pass, which creates a risk of rear-end collision or cars trying to pass me. Cars have gotten into near misses trying to pass me while my vehicle is inoperable. I have no warning lamps or messages before it happens. History: The dealer performed Honda’s idle-stop software update (service bulletin 23-008) in November 2024 at about 63,100 miles. The problem continues. The battery was replaced in December 2022, and the dealer’s October 2026 inspection rated the battery “Good.” (as did a second independent auto shop). At 93,331 miles in October 2026 the dealer documented the complaint, charged a diagnosis fee, and recommended replacing the starter motor at a cost of $954.53 plus a diagnostic fee of $184.95. I contacted Honda, which opened a case and offered only partial goodwill coverage. I am not aware of any additional recall or warranty extension covering this on my model. This appears to be the same condition as NHTSA investigation EA25004 (no restart after auto start/stop engages), which covers 2018-2025 Odysseys. The failure persisting after the software update matches the investigation’s finding that complaints continue after Honda’s countermeasures. I can share vehicle inspection records if helpful.

NHTSA ID

11773287

Incident

Oct 16, 2026

We were presented with recall information on our vehicle by Honda in August of 2026. We have called our dealership where our car was purchased to schedule the recall repairs. We have been denied 2 times for the repairs and were told they did not have the necessary parts to complete the repairs.

NHTSA ID

11773215

Incident

Oct 1, 2026

Front camera malfunctioning causing errors ACC, LKAS, Collision mitigation problem, road departure problem, auto high beam problem

NHTSA ID

11773136

Incident

Sep 20, 2026

The contact owns a 2020 Honda Odyssey. The contact received notification of NHTSA Campaign Number: 26V423000 (Back Over Prevention); however, the part to do the recall repair was unavailable. The dealer was contacted and informed the contact that the parts were not yet available. The manufacturer was contacted by phone and the contact was informed that parts were on back order.

NHTSA ID

11772796

Incident

Oct 21, 2026

The rear coil springs on my vehicle failed before reaching 100000 miles. This affected the performance of the suspension system which reduced steering response and stability at highway speeds. It also likely caused early failure of the rear shocks which had to be replaced at about 105000 miles. The problem also lead to uneven tire wear increasing the risk of a tire blowout. The springs are currently being replaced with Honda OEM parts at a mechanic shop.

NHTSA ID

11772379

Incident

Oct 20, 2026

The side mirror was loose and fell from the housing. It banged against the car and cracked.

NHTSA ID

11772175

Incident

Oct 19, 2026

Associated Recall: 26V-423 (Rearview Camera Cable Harness) Description of Safety Defect & Insufficient Recall Remedy: I am filing this complaint to report that the current manufacturer remedy for recall 26V-423 is insufficient due to a related, pre-maturely failing structural component that Honda is failing to address. The rear window seal for the glass sliding door (Honda Part # 73220-THR-A01) on this generation of the Honda Odyssey is made of a defective rubber material. On my vehicle, this seal is prematurely disintegrating into small shreds [Optional: See attached photos]. This degraded seal allows water to seep directly into the rear camera housing area. While the recent recall may have replaced or repaired the immediate rearview camera wiring, the ongoing water intrusion caused by this disintegrating window seal will inevitably cause the new camera components to fail again. Fixing the camera without addressing the root cause—the failing rubber seal letting water in—makes the current recall remedy entirely temporary and insufficient. NHTSA needs to investigate part number 73220-THR-A01 and compel Honda to issue an expanded recall to replace this seal with a higher-quality, weather-resistant material to prevent future safety failures of the backup camera system. I have already reported this issue to the service advisor on Oct 12 2026 at ourisman honda of woodbrige VA and they said they cannot help me with it and recall is not addressing the windshield molding on the rear sliding door of the minivan.

NHTSA ID

11771241

Incident

Oct 14, 2026

The contact owns a 2020 Honda Odyssey. The contact stated that while coming to a stop, the vehicle independently shifted into Park (P). The contact stated that the check engine warning light initially illuminated before the vehicle automatically shifted into Park (P); however, the failure escalated, with the vehicle shifting into Park (P) and shutting off the engine entirely without warning light illumination. The vehicle was able to be restarted following the failure. Additionally, the collision warning light illuminated on the instrument panel, with no vehicles nearby. The vehicle was taken to a dealer. The failure mileage was 55,000.

NHTSA ID

11771109

Incident

Oct 1, 2025

Mileage

55,000 mi

The power tailgate on my 2020 Honda Odyssey EX-L will not stay open sometimes. After it is raised it sags and soemtimes closes on its own, with a beep. This happened mutltiples times over the past year and a few times in XXX where it has closed on my young children while they were near or loading into the vehicle, and it hit me on the head. Nobody was seriously injured, but a heavy tailgate closing on a child's head or neck could cause serious harm. Honda service bulletin 22-018 (XXX) describes this condition and says to replace the right tailgate spring (74981-THR-A01) and clips. Honda has not issued a recall. I opened Honda Customer Care case XXX. The dealer told me Honda needs a paid $250 diagnosis before it will consider goodwill, which I declined. I am concerned this is a safety defect affecting other Odysseys and ask NHTSA to review it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11771088

Incident

Aug 18, 2026

On the middle of July, we were driving and all of a sudden all these lights start coming up the Brake System Warning, Collision Mitigation ,Adaptive Cruise Control (ACC) , Lane Keeping Assist System (LKAS), Road Departure Mitigation System, Auto High-Beam we took it to holler Honda. They said that it was code u3000–49 for forward camera and that it will need to be replaced. They are charging us almost $3000 to get it fixed.

NHTSA ID

11770346

Incident

Jul 16, 2026

Front Camera failure which disables the entire Honda sensing Suite, Shuts down Cruise control, lane keeping assist, front collision warning and Auto emergency braking. This has caused the loss of many safety features intended to prevent accidents and injury. There are numerous warning lights on the dash that are constantly displayed and can be a distraction to other safety or maintenance concerns. Dealer has diagnosed the problem to be an issue with a faulty front camera system. The repair for this is extremely expensive

NHTSA ID

11769902

Incident

Jun 1, 2024

While sitting at light, Idle stop engaged and engine stopped - then car lost all power. I was boxed in in heavy traffic and could not move. The car could not be shifted to neutral when I tried to consider how I could get off the road. After a minute or so power suddenly returned to the vehicle and I was able to proceed. The next day, lucklily at a less busy intersection the same issue occurred (again with Idle Stop engaged). After these events I scheduled to take to dealership. Over the next several days I made sure Idle stop was not engaged and had no further issues. Took to Honda dealership and they determined started needed to be replaced. This repair was completed at my expense.

NHTSA ID

11769895

Incident

Oct 5, 2026

Code: U3000-49 Multi purpose camera unit/millimeter wave radar internal electronic failure Camera

NHTSA ID

11768823

Incident

Oct 2, 2026

SUNROOF stopped working. diagnosis: motor is the issue. I may have used it 20 times since purchase. I believe water intrusion caused this. it just decided to stop working.

NHTSA ID

11768811

Incident

Dec 31, 1969

While Automatic IDLE was on, engine shut down at a red light. Dashboard showed message: put in park. Alternator was fine. Battery fine. I DID get the software update but this happened AGAIN. This time was able to put in park and was able to start the car. I have to remember to turn OFF Automatic IDLE to avoid this from happening again.

NHTSA ID

11768810

Incident

Sep 9, 2026

after a heavy rain, the automatic tailgate opening/closing function stopped working. Trunk can only be opened manually. warning message on dashboard: POWER TAILGATE PROBLEM. water intrusion. cracked seals.

NHTSA ID

11768808

Incident

Oct 1, 2025

Upon starting my Honda Odyssey, the dash immediately started saying, Collision Mitigation System Problem, Adaptive Cruise Control Problem, Road Departure Mitigation System Problem, Lane Keeping Assist Problem, Auto High Beam Problem.

NHTSA ID

11768117

Incident

Sep 12, 2026

The contact owns a 2020 Honda Odyssey. The contact stated that on several occasions while stopped at a red light, the vehicle shut off unintendedly and had to be manually restarted. The battery warning light was occasionally illuminated. The vehicle was taken to a dealer where it was diagnosed, and the contact was informed that the battery needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was 39,000.

NHTSA ID

11767405

Incident

Mar 31, 2026

Mileage

39,000 mi

One morning, with no prior issues, we started driving our van and it suddenly displayed several warning lights, including brake system, adaptive cruise control, auto emergency braking, forward collision warning, lane departure warning, and lane keeping assistance. We took it to Darcars Honda in Bowie, MD who diagnosed it as a front facing camera failure. The dealer replaced the camera and kept the old one. This failure in a six year old van increased the danger of collision while operating the vehicle.

NHTSA ID

11767300

Incident

Sep 25, 2026

The auto idle start when I am at a red light it will turn off and put it in park. I have to restart the van and put it back in drive. I believe this to be a safety issue. I have my kids with me and its dangerous. I would like to know what can be done and why hasn't this been a recall. I have to remember to push the auto idle button each time I get in to drive otherwise Im afraid ill get stranded at an intersection. Its been going on for at least a year and the dealership thought it was the battery we have replaced the battery so that is not the issue.

NHTSA ID

11767174

Incident

Sep 25, 2025

Front windshield mounted sensor failure on 2020 Honda Odyssey. Disabled Honda Sensing safety suite which included lane keep assist, adaptative cruise control, auto high beams which all triggered warning messages on the dashboard which all occurred at the exact same time. This problem has been reproduced an inspected by Honda of Frontenac.

NHTSA ID

11766681

Incident

Sep 21, 2026