Power Train Problems of Honda Odyssey - part 1

While driving the car lurches as it shifts gears. This had gone on for quite some time but no codes have been thrown. This last time the car lurched so badly at the beginning of acceleration that I thought it was going to stall. It did not, but lights began flashing on the dash and when codes were (finally) thrown I was told I needed a new transmission altogether.

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After driving for awhile, stopped in a store for a minute and came out and my van barely started. Made my next stop a minute down the road, and when I came out the car wouldnt turn over. Let it sit for a minute and still heard the start click once and nothing. Let it sit for 10 15 mins then tried to start it and it worked. Had battery and alternator tested at auto parts store and both ok. After reading some forums and researching, I see that it is an overdraw from the auto start feature. I also saw the model of starters on my year of van were only used one year, so it seems like its a problem Honda has known about. Im seeing a lot of these issues, and the guy at the auto parts store even knows about it, so it is something that needs a recall. Clearly these starters are a problem. My van just rolled over 36k miles because we drive a lot so its not under warranty still.

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On 2 occasions now automatic start/stop system has failed to restart. First was approximately 5 weeks ago and second was Monday 3 Aug 2026. Dealer on first occurrence said there was a loose wire. Have not been to dealer on 2nd occurrence yet. Situation in both cases is the vehicle was seemingly operating normally with no warnings displayed and I stopped in traffic. When traffic cleared and I tried to proceed; the vehicle was non responsive and would not start when I activated the normal start sequence.

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Incident description: the vehicle entered an auto idle stop event at a traffic light and stalled completely instead of restarting when the brake pedal was released. The red battery warning light illuminated, and the vehicle had to be shifted into park and the ignition key cycled multiple times to eventually achieve a slow, sluggish crank and engine restart in active traffic. Another vehicle was almost going to hit me from behind since red light turned to green when this happened, and that driver from far behind was thinking that my vehicle will start moving and did not slow down. That driver started honking and yelling. It was scary since I had 3 small kids in my vehicle. Dealership diagnostics: I dropped off the vehicle at a local Honda dealership to get this checked. From the invoice/service document, I see this note: cause: took several attempts but was able to duplicate concern of when vehicle goes into auto start stop it will not always restart, will have to cycle key. Noticed when it did restart it is slow to crank. Battery tested good, and had good reserve voltage. Used tech line as a resource and found this issue is caused by starter not having enough voltage to properly engage auto stop start. Rec replacing starter. Correction: replaced starter.

Wife was going to the store engine lost power and died prior to that steering got loose like trying to turn itself, towed to dealer inspected dealer cleaned throttle returned vehicle after cost of 807. 00 and drove van to church tailgate would not open without vehicle running, got home turned off windshield washers operated brittle with key off, remote key system problem displayed also hill hold, brake failure and steering message on dash prior, dealer picked up van inspected again found defective seal sealer on passenger side leak in water on wiring harness pins and soaking power distribution box said that was causing issues and stalling driving and safety system issues, van is at dealer, also tailgate after you open with ding when open and will close by itself, safety issues will close while you or small child in at back closes from behind you.

With a 103,000 on the dash, engine experienced signs on slowing, check engine, abs, adaptive cruise, and steering faults amongst others . No lights prior to the bearing failing. The engine experienced rod bearing failure and left use stranded on the side of the highway. All maintenance was performed at dealership, towed back to dealership where upon inspection rod bearing completely fell apart. Vehicle is still at dealership where a 14,000 dollar engine was quoted.

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My 2024 Honda Odyssey has repeatedly failed to restart after the auto idle stop system shuts the engine off at a red light. When I release the brake or press the accelerator, the engine does not restart as it should. The vehicle then shifts into park or instructs me to place it in park, and it is difficult to restart using the start button. This has left the vehicle disabled in an active traffic lane and creates a serious risk of being struck by another vehicle. I have been stuck at a red light with people honking at me and haven't been able to start the car for up to a minute. The problem is intermittent, and I do not know whether it is caused by the engine, electrical system, battery, starter, software, or power train. The auto idle stop system should not shut the engine off if the vehicle may be unable to restart.

My Honda Odyssey has always had continuous issues when sometimes driving the car at low speeds it randomly jerks, which can become an issue when driving. I believe this is related to the manufacturers reference to service bulletins #19-014 and 20-016 stating a software upgrade is required. However my local dealer is stating this software can only be carried out if it is diagnosed first and a fee will be charged and only if jerkiness is found then another fee will be charged for the software install. As this is a known issue - should this install of software be a recall item. As this to me is a safety hazard, when the car jerks unexpectedly and should not have a cost involved for diagnostic and then additional for the software update.

The vehicle is a 2020 Honda Odyssey. A recurring and dangerous safety failure occurs involving the auto idle-stop system. With the system enabled and the vehicle at a complete stop, the engine shuts off as designed. However, upon depressing the brake pedal to resume driving, the engine severely struggles to restart and completely fails. Simultaneously, the vehicle immediately and automatically shifts itself into park, and the entire dashboard display illuminates with all available warning icons and messages. This malfunction creates an immediate, high-risk safety hazard. When the incident occurs, I am trapped, locked in park, in live traffic lanes, sometimes at busy intersections or during left-hand turns. It is impossible to shift back into drive or quickly restart the engine. I am forced to remain stationary in traffic for multiple minutes until the system allows me to cycle the ignition completely off and then back on to attempt a full restart and shift back into drive. This leaves my vehicle, my passengers, and other drivers vulnerable to rear-end collisions.

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The vehicle failed to re-start after being engine had been at full operating temperature then was turned off for a short period of time. It has also struggled to re-start with auto start/stop leaving the vehicle partially in a busy intersection without any engine power until it successfully turned over several seconds after releasing the brake pedal. The dealer is unable to replicate. They have tested the starter and battery and confirmed both test good at ambient temperatures. No warning lamps. Once the vehicle cools, it is able to re-start again.

The vehicle has an automatic stop/start feature that is enabled by default, though there is a button readily accessible to deactivate the function easily ea. Time the vehicle is operated. The vehicle has just had the starter replaced under warranty @ 25k miles. There have been issues with the vehicle struggling to start for at least six months now - rough, slow starts where the engine is struggling to turn over. If I forget to turn off the auto-start/stop function, the engine will sometimes shut off at a red light - but it won't turn on again when the light turns green and it's time to move. I have had this happen a handful of times in traffic - the engine turns off and will not restart when normal procedures are followed.

The automatic engine shut off at stop doesn't always restart engine when moving again. This has happened several times where the engine doesn't restart after the engine shut off is engaged. This is the same issue as reported in NHTSA action number: ea25004.

When I come to a full stop and the idle stop feature engages, sometimes the engine will not restart. I get a message saying to press the button to start the engine, but it does not start after doing that either, so I have to shut the car off and restart it. There are a bunch of lights that flash when this happens.

Mother single , sole support 4 babies and going through divorce needed a vehicle right away . Carvana rated this car 94 after its 150 pt inspection . It was noted that it was in an accident. Driving the babies on interstate the pilar flew off, later on still on interstate , ck engine light came on, then steering warning, brake warning and sudden loss of speed . Car would not accelerate beyond 40 miles per hour . Day 32 car was taken to Honda where she found she could not open the hood. Car was then sent to gerber a very quick look found upper tie bar was “buckled” the dipstick bent and radiator “floating” also impact bar was missing or bent … read gerber report for clarification , told with hood misaligned and latch bent way back hood could possibly fly up and no front end protection in a collision. I am horrified and begging for emergency swap… they are claiming cosmetic … buckled upper tie bar?? they are waiting on a more detailed report gambling with 5 lives or more ! I loaned this child7000 to help lower payments . I wanted her to have a safe vehicle to drive. This is undrivable yet she cannot afford rental. . Why are they waiting for detailed when we know it was wrecked January 13 2026 and obviously not a 94 and safety inspection 150 was clearly fraud I would never have let her and those babies buy a wrecked piece of junk! I am scared everytime she gets behind the wheel. The amount of time is taking away from her new job. She is sole support please help emergency swap now.

When the engine shuts off while braking at a light/stop sign etc occasionally the car will fail to turn the engine back on and the car will go in to park and the only way to get in to drive is to restart the car. This happens once or twice a month.

Yesterday my 2024 Odyssey auto stop engaged and the car wouldn’t restart in the traffic light. I had to turn the car off and try twice before it would restart.

The contact owns a 2025 Honda Odyssey. The contact stated that while depressing the brake pedal and stopping at a traffic light, the gear shifter independently shifted to park(p). The vehicle was turned off and restarted, and the vehicle then operated as intended. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The insurance company had not been contacted. The manufacturer was made aware of the failure and opened a case. The failure mileage was 26,000.

I purchased a 2018 Honda Odyssey and reported during my 7-day inspection window that the transmission was acting sluggish. The carvana-authorized inspection service (pep boys) claimed the transmission was fine. Over time it showed more and more signs of failure until it completely failed. On the directive of the seller (carvana) and warranty administrator (silverrock), the vehicle was taken to an authorized pep boys facility for a complete transmission replacement. Less than two days after picking up the vehicle, the replacement transmission suffered a complete failure on a public roadway. The vehicle suddenly lost all acceleration and forced itself into 'limp mode' on a highway, and loss of steering control, nearly causing a severe collision. The vehicle is inherently unsafe, and the authorized repair network has failed to provide a merchantable or safe repair, creating an immediate life-threatening hazard.

2025 Honda Odyssey auto idle stop fails to restart engine after automatic shutdown at intersections; vehicle must be restarted manually; safety hazard; repeated occurances; video documentation made. Reference: NHTSA ea25004.

Had the starter & battery replaced November 2025. It’s now June 2026 and it still is having trouble starting. It will sometimes not start and then just make a clicking noise and all the lights in the dash come on and air, but engine won’t well start. Then you take foot off break, then turn it off and try again it will start. The dealership ran tests and said everything was fine. When we first had this problem the car would stall out and shut off in traffic.

Our 2025 Honda Odyssey has now experienced three failures for the same defect, including two starter replacements within two weeks, without resolution. The most recent repair, overseen by Honda tech line, happened after the vehicle died June 2 while in traffic and it had to be towed to the local dealership using our insurance. On June 15 the vehicle died again, just five days after I picked it up with assurance that this issue was resolved, and it is was towed back to the dealership by Honda towing. The repeated part swaps, without root?cause diagnosis, clearly have not resolved the issue and have left us with a one?year?old vehicle that is unreliable and unsafe to operate. My minivan has failed in the middle lane of a major road while idling at a stoplight twice and in a parking lot once. All incidents were within 15 minutes of driving and 5 miles from my home. This is a critical safety defect and the repeated failures place this vehicle within the criteria that may qualify under kentucky’s lemon law. We have not made that claim yet, but we are formally documenting the repair history and escalation. ———- -starter failed and was replaced twice. This could have something to do with the auto start/idle system. -our one year old van is unsafe and unreliable. It died near a major intersection while idling at a stop light. I was in the middle lane and it wouldn’t restart for 5 minutes. I was very afraid my children and I would be rear ended. -the dealership has confirmed the problem, but they not been able to recreate the scenario despite it happening on 3 separate occasions. -Honda tech line has been directing the local dealer what to do after the first starter replacement failed. I filed a claim with american Honda. -no warning lights/lamps prior to failures.

The vehicle has an auto idle stop no-restart/stalling issue. While stopped at a traffic light/intersection, auto idle stop engaged. When attempting to proceed, the vehicle did not resume driving normally, shifted itself into park, dashboard warning lights flashed, and the only way to move again was to turn the vehicle completely off and restart it. This left the vehicle disabled in traffic and created a serious rear-end collision/intersection hazard. The issue was confirmed by a Honda dealer on 06/26/2026 at approximately 11,804 miles. The repair order states that code p07af was stored and that a snapshot showed a drop in cranking voltage due to a failing starter. The dealer advised that the starter must be replaced, but stated the starter is on severe backorder. The vehicle remains unrepaired. Honda customer service case #16464445. The vehicle is a low-mileage 2025 Honda Odyssey purchased new in April 2025 and used as a family vehicle to transport children. Prior Honda service records show maintenance was performed at approximately 9,800 miles, including a multi-point inspection, and the battery terminals/cables/mountings and battery condition were checked ok at that time. This appears related to NHTSA engineering analysis ea25004, “no restart after auto start/stop engages,” involving 2018–2025 Honda Odyssey vehicles. The failed starter/vehicle is available for inspection upon request.

The vehicle is experiencing a dangerous hesitation during acceleration at low speeds, immediately followed by a sudden, violent forward lunging motion. When attempting to accelerate from a complete stop, or when rolling at low speeds (such as yielding at a roundabout, turning through an intersection, or merging into slow-moving traffic), the vehicle suffers from a distinct * or complete failure to accelerate** for several critical seconds. In an attempt to get the vehicle to move out of harm's way, the driver naturally applies more pressure to the gas pedal. The vehicle's transmission then randomly responds after a few seconds with a violent lunge forward, spinning the tires and causing the vehicle to surge unpredictably. This unpredictable behavior creates an immediate and severe safety risk to the occupants of my vehicle and others on the road: 1. Intersection collisions: the sudden lag leaves the vehicle stranded in oncoming traffic during turns, while the subsequent lunge threatens to overshoot the intended lane. 2. Pedestrian hazards: the sudden, uncontrollable lunging makes low-speed maneuvers in school zones, crosswalks, and parking lots incredibly hazardous. 3. Drivers behind behind me do not expect a vehicle to suddenly stop accelerating after it has begun to move forward. I have taken the vehicle to the dealership we're we were able to reproduce the issue and Honda would not offer a fix. I thought I was going to get my entire family killed the other day when I pulled out at a stop the van hesitated in the middle of the highway for a few seconds before lunging forward. This is an intermittent issueand the severity varies each time, but is commonly cited online.

At roughly 5,000 miles, this 2020 Honda Odyssey was brought into an authorized Honda dealership due to transmission concerns. The dealership service department improperly evaluated the 10 speed transmission, and diagnosed a 9 speed transmission system, assured me that what I was feeling was completely normal, and instructed me to only bring the vehicle back if the issue got worse. At approximately 60,000 miles, after experiencing a transmission slip, I immediately took the vehicle to an ase blue seal certified shop for a complete transmission service to ensure proper maintenance was performed by qualified technicians. At approximately 80,000 miles, while driving on a highway during a family trip, the transmission suffered a sudden, catastrophic failure, resulting in a total loss of motive power at speed. Losing all propulsion on a high-speed highway created a severe safety hazard for my family and surrounding traffic. The complete mechanical failure was subsequently confirmed by a service center, and the failed transmission assembly remains available for inspection upon request. Initial symptoms were presented directly to an authorized Honda dealer in annapolis MD while under factory warranty and the vehicle was properly maintained by certified technicians thereafter, but the underlying defect went unaddressed until complete failure occurred on the road.

While driving approximately 75 mph on I-77 s our van stopped accelerating without warning. The engine would rev but no acceleration was occuring. There had been no signs of any issue prior and no warning lights appeared. We were able to make it to the side of the road and immediately called a tow truck to take us to the nearest Honda dealership. We had to wait on the side of a very busy interstate with our one and three year old and then get all of us safely to the dealership after the tow truck arrived. We were lucky that the sudden stop to our acceleration did not cause an accident and that we were not hit while parked on the shoulder (the tow truck driver indicated that there had been two collisions of that nature in that area in the month before our incident). The dealership confirmed that the transmission needed to be replaced a couple of days later. When asked what the issue was we were really only given a vague explanation of a part inside potentially failing and causing a ripple effect. The van was 6 months out of the five year warranty and only 272 miles over the 60k warranty. It had previously been serviced by a Honda dealership in March of this year and nothing was noted at that time about the transmission needing attention (such as a transmission fluid change). At no point had the onboard "maintenance minder" indicated that we needed a transmission fluid change as well. The service technician who diagnosed the transmission failure also indicated that there was nothing in the transmission fluid (like parts or metal shavings) to show where the failure occurred. The fact that a transmission would have a complete failure with zero warnings beforehand or any real explanation at 60k miles seems like a serious design flaw.

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The vehicle turned off at a red light and would not start up again.

Car did it’s normal automatic shut off while stopped at red light but then did not automatically restart when I took my foot off the brake. I couldn’t get it to start or turn off. I was just sitting with a dead car in the middle of traffic. It was still on but totally unresponsive! I called 911 but before they arrived I managed to get the car to turn off and then restart. ??.

Vehicle driving at highway speeds and put itself into park while at speed without operator intervention. Vehicle became uncontrollable and an extreme hazard.

Vehicle has stopped running multiple times while at stop signs or traffic lights when engine is at idle and not running. The vehicle has to be restarted to go after shutting off while in traffic. It is very concerning when this happens in live traffic. The dealer has had the vehicle for days and were not able to replicate what happened. Asked me for more information on what was being used when it happened. They say they ran tests and were unable to get any codes to show what might have happened. The only thing I have seen was reports that the idle stop feature was unavailable previously. Not sure when that happened? this has happened at least 6 different times, last time being may 8th 2026.

Once the vehicle's auto idle stop system engaged at a traffic light, and the engine failed to restart automatically leaving us stranded in active traffic. We usually disable the system but forgot that time. It has also required multiple manual push-button attempts to start from a parked position at home and in public parking lots. The vehicle was brought to an authorized Honda dealership for this issue. The dealer stated they could not replicate the symptom, diagnosed it as a low battery, and charged the battery. The issue persists. Failing to restart at a traffic light creates an immediate rear-end collision hazard and leaves occupants vulnerable in the middle of active intersections.

The auto-idle off feature - yes the stall happened in a situation where cars behind me would have expected me to start moving and could have resulted in a rear-end collision. The vehicle has stalled like this three times. The other two times were not in public or traffic situations. It has not been reproduced or confirmed by a dealer or service center. It has not been inspected by anyone else. There were no warning lamps or messages prior to the failure, only after.

The vehicle's auto idle stop system is malfunctioning, resulting in the engine failing to restart from a complete stop. This total failure has occurred on five separate occasions, including while stopped in active traffic intersections. Prior to these total restart failures, the vehicle showed the following symptoms: 1) initially, the vehicle experienced rough engine idling, abnormal vibrations, and a raw gasoline odor after driving. 2) this progressed to a noticeable delay between releasing the brake pedal and the engine attempting to ignite, during which the starter sometimes sounded strained. 3) this has culminated in the current defect where the engine shuts off normally when stopped at an intersection, but completely fails to immediately restart when the brake is released. This defect completely immobilizes the vehicle in active traffic lanes, exposing us to an immediate and severe risk of a rear-end collision. When the engine fails to restart, the vehicle locks the transmission out of drive and triggers a warning on the dashboard. It is a highly hazardous situation, especially with a lot of distracted drivers on the roadways.

My 2024 Honda Odyssey ex-l has a recurring auto idle stop failure. About 1–2 times per week, when stopped at a light and auto idle stop engages, the engine fails to restart properly when I release the brake. The engine sputters or shuts down, the battery warning light comes on, and the vehicle shifts itself into park. I then have to hold the start button for several seconds to restart the engine. This creates a safety risk because the vehicle becomes disabled in active traffic when the light turns green. The vehicle was previously taken to a Honda dealer for this issue, and the battery was replaced, but the problem continues.

I am writing to open a formal complaint regarding a serious transmission defect in my 2019 Honda Odyssey (VIN: [xxx] ). My vehicle is currently exhibiting symptoms that directly match the 'transmission programming defect' documented in ongoing litigation, specifically symptoms: while accelerating produce rough and delayed shifting; sudden jerking, sudden, harsh accelerations and decelerations; and a sudden loss of power. I am aware of case no. Xxx (xxx v. American Honda motor CO. ) and case no. Xxx (xxx v. American Honda motor CO. ), which allege that the 9-speed zf 9hp transmission in my model year suffers from a design defect. These transmission failures create a significant safety hazard. Recently my van report code as transmission system problem the second time. We got mechanic checked and confirmed it is transmission issue. The first time when it happened, we drove the van on highway and suddenly it lose power and slow down by itself. There was no response even we applied gas. We went down highway and drove to a close-by repair shop. They replaced some part for us but it didn't resolve the issue. This time since the error comes, it won't speed up in lower speed except the speed goes beyond 40-50 miles plus. When we back the car, it responses slow or none. It comes with big noise also now. It definitely gets worst. The very common issue when you stop and start to move, it never responses from the beginning even we applied gas, even the passenger can feel the reluctance. It also happens when the van turns. We also had the experience when driving on the highway, it speeded automatically without driver applied the gas. It feels like someone pushing us behind. There was transmission control unit recall for 2018-2019 Honda Odyssey (touring/elite). Honda actually knows the issue but they didn't reveal this to their customer. This brings life threatening concerns on the highway. I hope this complaint can save lives and family information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(.

Brought car into Honda of nanuet for lots of dashboard lights on. Was told that I need a airflow tube replaced. Milage was at 79048. Immediately after picking up car, same thing happened and was told that computer needs a reset. 2 months later same thing happened again and was told there is an internal error of powertrain computer and needs to be replaced. Now milage is 81,147 and am being told that it is out of warranty and need to pay 1500+ to place.