2020 Honda Odyssey: engine overheating

Filed Aug 19, 2026 · Engine · CT

The engine auto idle system failed at a stoplight. The auto-idle engaged, but when I took my foot off the brake, the engine did not restart. It completely shut down, putting my car in park in a busy intersection. The engine light and an error message flashed briefly but disappeared. I was able to restart the car and drive, however, only after waving several other cars to pass by me. I've noticed recently the restart function lagging, and if I put my foot on the gas too soon, the car lurching and jerking forward (indicating the engine isn't restarting quickly or properly). I recently had a full routine service on the vehicle, indicating battery life is good. No other issues appeared such as overheating.

Filed Jul 8, 2026 · Driver assistance · GA

The front-facing Honda Sensing camera in my 2020 Honda Odyssey overheated in a 90deg climate. This triggered multiple dashboard warning lights: Adaptive Cruise Control (ACC) Problem, Lane Keeping Assist System (LKAS) Problem, Road Departure Mitigation (RDM) System Problem, Collision Mitigation Braking System (CMBS) Problem, BRAKE System Problem, and Auto High-Beam Problem. The Honda dealership quoted me $1850 to fix it and they said it was a well-known error. There were NO issues with my car prior to this problem. I keep up with all routine maintenance, oil changes, timing belt and water pump replacements, etc. Not only are these safety features inoperable, but these warning lights are very distracting to the driver, but worse than that- I would be unaware of other system failures since I have so many warnings displayed.

Filed Mar 10, 2026 · Driver assistance, Electrical · FL

The multipurpose camera module has failed, on the vehicle resulting in the simultaneous loss of several driver-assistance and safety systems while the vehicle is in operation. These systems include cruise control, lane keep assist, lane departure warning, collision mitigation, automatic high beams, and the brake system warning. Upon inspection, there appears to be overheating within the camera module. This overheating has caused visible discoloration both inside and outside the module housing. Based on these observations, I believe the condition may present a potential fire hazard. Additionally, the plastic cover mounted to the windshield becomes extremely hot to the touch, creating a risk of skin burns if it is accidentally contacted. This malfunction poses a significant safety concern for my family. If the camera fails while driving, the vehicle’s safety systems may not function as intended, increasing the risk of an accident. All of the failures chime in one after another displaying a problem with the malfunctioning components stated earlier in the text. Furthermore, if a driver is deaf or not actively monitoring the instrument panel or speedometer, they may not hear or immediately notice the warning alerts indicating that these systems are no longer functioning. The issue has been diagnosed by my local repair shop finding error code U3000-49: Camera/Radar Internal Failure. Repair requires replacement of the multipurpose camera module, with an estimated cost exceeding $2,000 in parts and labor, which represents a significant financial burden.

Filed Nov 28, 2025 · Driver assistance · PA

The forward facing camera failed on my 2020 Odyssey with only 90,000 miles. Because of this failure, I am loosing all my forward facing safety features. This seems to be a common issue across many Honda vehicles and most users report being told the issue is being caused by overheating. Since users are being told this is a cause and effect issue, the manufacturer should address this at their expense. I first noticed this issue in mid September 2025.

Filed Sep 9, 2025 · Driver assistance, Electrical · IL

The multipurpose camera in mounted underneath the rearview mirror stopped working. No apparent reason for the malfunction to shut the vehicle off while filling gas and then five different warning lights occurred, including issues with lane keep assist, adaptive, cruise control, automatic, breaking, and several other safety features no explanation for the failure when that vehicle was taken to the dealer and currently being charged $2500 for a replacement of the camera and labor associated with the repair. My belief is that the system is malfunctioning due to overheating, which is a design issue associated with the vehicle and isn’t something that I should be responsible for.

Filed Nov 1, 2023 · Driver assistance · MO

LKAS, Adaptive cruise control, forward collision warning, automatic emergency braking, lane departure warning all malfunctioned. Dealer inspected and determined it is an overheated camera that controls all the mentioned safety functions. This happened while driving on highway and has never worked again. I did confirm with the dealer this is the 3 instance they have seen of this in the past 3 months.