2025 Honda Odyssey: engine failure

Filed Nov 7, 2026 · Engine · NE

Stopped at intersection and engine cut off due to auto-cutoff feature. When foot was released form brake, the engine failed to restart. It took approximately 30-45 seconds to get the vehicle restarted. Auto engine shutoff feature disabled for remainder of trip with no further issues. We have experienced this in the past as well 2-3 other times.

Filed Oct 27, 2026 · Electrical, Engine · UT

The vehicle's Auto Idle Stop (AIS) system engaged normally when coming to a complete stop at an intersection, shutting off the engine to save fuel. However, when attempting go through the intersection after the light changed to green, the engine failed to restart automatically. The vehicle completely lost power in an active lane of traffic, creating a safety hazard. The vehicle had to be shifted into park and manually restarted to clear the roadway. This failure appears directly related to the federal safety agency Engineering Analysis EA25004 regarding Honda/Acura Auto Idle Stop restart failures.

Filed Oct 16, 2026 · Electrical, Engine · PA

Start/stop function failed. After stopping at a red light the start/stop function turned off the engine. After lifting off the brake, the engine died when attempting restart. This required turning the vehicle completely off and back on to continue driving.

Filed Oct 14, 2026 · Electrical, Engine · NC

Start/stop function failed. After stopping at a red light the start/stop function turned off the engine. After lifting off the brake, the engine died when attempting restart. This required turning the vehicle completely off and back on to continue driving.

Filed Oct 12, 2026 · Electrical, Engine · PA

Vehicle auto start/stop was turned on. Vehicle stopped at a red light, vehicle engine shut off. Upon releasing the brake pedal, vehicle engine failed to start, a series of warnings and messages flashed on the dashboard, then vehicle transmission slammed into Park, from Drive. Driver proceeded to turn the vehicle off entirely, and was able to successfully restart the vehicle and drive away. Dashcam video, which captured audio and video through windshield but not dashboard, available upon request (file size too large to submit via this form).

Filed Oct 12, 2026 · Engine · AZ

I would like to report two incidents involving my 2025 Honda Odyssey Touring that may be relevant to the federal safety agency Engineering Analysis EA25004, which is investigating failures of the Auto Idle Stop system to restart the engine. The investigation includes 2018-2025 Honda Odyssey vehicles and concerns allegations that the engine fails to restart after an Auto Idle Stop event. On September 27, 2026, and again on October 12, 2026, my vehicle failed to restart after the Auto Idle Stop system shut off the engine while I was stopped at a red traffic light. When I attempted to proceed by releasing the brake and pressing the accelerator, the engine did not restart as expected. In both incidents, the vehicle automatically shifted into Park and displayed a message instructing me to restart the engine manually. This left me unable to proceed in an active traffic lane and created a potential safety hazard due to surrounding traffic. Both events occurred unexpectedly and without prior warning. The condition is consistent with reports of Auto Idle Stop no-restart failures that are the subject of EA25004. I respectfully request that this information be included in the ongoing investigation. Vehicle: 2025 Honda Odyssey Touring Incident Dates: September 27, 2026 and October 12, 2026 Failure Mode: Engine failed to restart following Auto Idle Stop activation; vehicle shifted to Park and required manual restart. Safety Impact: Vehicle became immobilized in an active traffic lane.

Filed Sep 23, 2026 · Electrical · TX

2025 Honda Odyssey experienced an Auto Idle Stop no-restart condition. While stopped at a traffic light, the Auto Idle Stop system shut the engine off, but the engine failed to restart when attempting to proceed. The vehicle was disabled at an intersection, creating a potential safety hazard.

Filed Sep 5, 2026 · Engine · CA

Engine failed to restart after AutoStop function engaged at a red light. We were stranded and had to manually restart the car, which took long enough to figure out that we were stranded in traffic for a bit.

Filed Sep 5, 2026 · Electrical, Engine · VA

I am experiencing a serious and recurring safety issue involving the engine unexpectedly completely shutting off while the vehicle is being driven and separately, the engine intermittently failing to start after the vehicle has been parked. 1.The engine unexpectedly and spontaneously shuts off when the vehicle is stopped or slowing down, including at stop signs, traffic lights, and during traffic slowdowns. These events occur without warning or notice, and the vehicle does not reliably restart immediately. In nearly all instances, the engine has failed to restart for several minutes despite multiple attempts. This creates an extremely dangerous situation. When the engine shuts off unexpectedly in traffic, I am concerned that drivers behind me will not realize that my vehicle is experiencing a malfunction and may collide with my vehicle before I am able to restart it and safely move. These incidents cause me significant fear and stress each time they occur. I am not certain whether the vehicle’s Auto Start/Stop system is involved in these incidents or whether another component or system is malfunctioning. I am requesting that Honda and the dealership fully diagnose the cause rather than assuming that the behavior is normal operation of the Auto Start/Stop system. 2.Separately from the engine shutting off while driving, the vehicle also randomly and spontaneously fails to start after it has been parked. I have documented some of these incidents by video, including instances in which the engine failed to start. in which the engine failed to start despite multiple attempts. 3. As soon as these problems began, I took the vehicle to the service department of the dealership where I purchased it. At this point, the repeated engine shut-off and failure-to-restart conditions remain unresolved. I am requesting a thorough investigation and requesting that Honda identify the underlying cause of these failures and provide a permanent solution as soon as possible.

Filed Aug 29, 2026 · Engine, Fuel system · OH

Engine failed to restart after turning off at idle at a stop. When releasing the brake the engine tried to turn on but stalled out. It is available for inspection upon request. No major safety concern, traffic behind the vehicle was prohibited from moving until the vehicle could be restarted. The failure has not been reproduced by a dealer or service center, or inspected by anyone else. There were no warning lights but after the failure a message displayed saying “To continue to drive, depress brake pedal and push switch”. The failure first appeared after 10,000 miles and occurred between 5-10 times since then.

Filed Aug 25, 2026 · Electrical · FL

Engine failed to restart during Auto Idle Stop event. Nearly created an accident.

Filed Aug 21, 2026 · Electrical · CT

While waiting at a stop light, the engine turned off and the vehicle forced itself into park. Taking my foot off the brake, had no effect. I was not able to put the vehicle back into drive. I had to shut off the engine and restart it in order to drive again. Of note, the AC and carplay were running at the time of the engine failure. No warning lights appeared. Cars behind me were honking at me. I have an appointment scheduled with the dealership to assess the auto-idle function.