Engine And Engine Cooling Problems of Honda Odyssey - part 2

Mileage: 121000 when stopped and the auto idle initiated, we have had numerous incidents where the van has shutoff and required a restart. More recently, when the auto idle initiates, the entire engine turns off and the van has no power(car won't restart, can't get the car into neutral, sliding doors and tailgate won't open). I would then need to jump start the car with my portable battery. This has occurred 4 times thus far. Honda dealership had recharged the battery but it still died and required a start. Currently in the shop and my 120k extended warranty just ran out. Very disappointing.

See all problems of the 2021 Honda Odyssey 🔎.

The auto idle-stop system is causing the vehicle to stall at stop signs, requiring a full shift into park, engine turnoff and turn to restart to get moving again. This has happened two times in four days.

See all problems of the 2025 Honda Odyssey 🔎.

My 2025 Honda Odyssey shut off in auto idle stop while at a busy intersection. The car was unresponsive and would not engage the motor. After five minutes of trying to turn the car off and on, it eventually restarted and the motor came back to life. This issue put me at great risk of bodily harm. Given the fact the car was unresponsive in such a surprising way, I was very lucky not to have cars crash into me from behind as they few by for the 5 minutes I was stranded. This is the first instance and has not been reproduced as I am too worried to drive the car now. No inspection of the vehicle has been completed as this incident just occurred. No waring light prior to the incident, but the battery warring light did come on while the car shut off and unresponsive.

Our 2025 Honda Odyssey touring has repeatedly stalled or nearly stalled while driving. Of at least three dealer visits, the stalling issue was first formally documented on xxx, when we reported the engine shutting off twice while driving and the brake warning light activating twice. Dtc 15477 ("failing starter") was recorded, and the starter was replaced. Xxx, my [xxx] daughter was driving alone when the van lost power at a red light and would not respond to the accelerator once the light turned green. She was unable to shift gears or shut off the engine, and the van remained unresponsive in live traffic for several minutes before power returned on its own. A bystander helped restart the vehicle and move it to safety. I believe this defect is the subject of open NHTSA engineering analysis ea25004 (opened xxx), covering 2018–2025 Odyssey and related Honda/Acura models for auto idle stop failing to restart after a stop. On xxx, the dealer confirmed the software was current, the battery was healthy, and replaced both relays, completing every step of Honda's documented repair bulletin. Hours later, on the drive home at 27,942 miles, the van stalled again at a stoplight. The dashboard instructed the driver to depress the brake and press the switch to continue driving. The driver powered the vehicle off and restarted it to regain control. Video of this incident: [xxx]. Dates of incidents: xxx – two engine shut-off events and two brake warning light events reported; starter replaced. Xxx – daughter's incident described above. Xxx – software, battery, and relays completed per repair bulletin; vehicle stalled again the same day at 27,942 miles. Repair history: full documented scheduled maintenance and bulletin remedy applied (starter, software, battery, relays) across three or more visits; vehicle stalled again hours after the final step was completed. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Vehicle was using an off ramp and shutdown in the middle of a lane. It was 10:00pm and all systems were shutdown, including lights. Vehicle refused to restart and could not be placed in neutral, the vehicle could not be removed from the interstate off ramp. This issue has been brought to the attention of Honda, the started assembly was replaced on March 5, 2026. This vehicle has been delivered to Honda for similar electrical/starter issues 4 times since October 27, 2025. The first report was filed with Honda on October 27, 2025 with all lights on dashboard lit when vehicle was active. Had to wait until a tow truck arrived before vehicle could be safely removed from the scene.

My van will stall at red-lights. It started three weeks ago. The car is a year and a half old. The auto- idle stop system is activated. We stop at a red light. Car stops. When we go to start car dings and thankfully has started 3 times. This time, the car made a ding and did not re-start. I was stuck at a now green light and couldn't move. The dash flashed hit the brake to re-start. I did numerous times. I couldn't get the car to switch to park or drive. I tried switching the car on and off and couldn't get it restarted. I was disabled for about 2 minutes before it kicked back on. My kids were in the car and this scared me.

Auto idle stop malfunction-- it happened twice during my travel (1)[xxx] , around 7pm. The car stalled and failed to restart at a local street of hasbrouck heights, NJ after signal turned green; (2) [xxx] around noon. The same problem happened at a [xxx] of goshen, NY when a semi track was behind me. I reported to NHTSA immediately after the 2nd incident, but I cannot find a confirmation number before going to my dealer, so I re-file the complaint. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The problem only happens after driving for more than 30 minutes. When I stop at a light, the engine starts shaking and stalls. The starter seems cranking normally, but it takes about 3 attempts and about 40 seconds to restart. One day, the engine stopped while I was driving. There is no check engine light. I took it to Honda dealer. But they keep saying they cannot replicate the problem. It is so dangerous to drive this car.

See all problems of the 2016 Honda Odyssey 🔎.

When I am sitting at a traffic light and the auto engine idle stop gauges it very frequently completely shuts off the engine and will not restart. I will hit the power button to try and turn the vehicle back on, but it won’t work. I have to put the car into park, completely turn off the car battery, open the car door, while sitting in the middle of traffic, and then shut the car door and restart the car. If I do not open the car door, I cannot restart the car. I have taken this into Honda twice to have an evaluated and they “cannot find“ the problem despite their being a bulletin out specifically about this problem. It is now shutting off on me three and four times in a single trip. I was almost in an accident trying to restart my car when a light turned green and I couldn’t get my vehicle to restart as all the cars around me went. This has been an ongoing problem for years.

See all problems of the 2019 Honda Odyssey 🔎.

While stopped at a red light- the idle stop engaged, but when released brake to go again, the engine failed to engage and I was not able to go- it then showed up on the instrument cluster to in order to drive- I needed to restart my vehicle. This has happened now 7 times in 9 months. 3 being in the last week.

Three times in the past week my van has shut off while I was preparing to move forward at a stop light. My car begins to idle as soon as it’s stopped, but when I lift my foot off the brake, instead of turning back on, my van engine shuts all the way off or jerks hard before acceleration. Resulting in me having to hurry and put my car in park & restart the engine. It’s very dangerous!.

I was stopped at a stoplight. The car has idle stop so the engine turns off at the light. When I tried to go the car went into park. I could not get it back in drive and had to turn the car off then back on. Meanwhile I am stuck in the middle of the road with traffic. This has happened several times before.

See all problems of the 2024 Honda Odyssey 🔎.

Yesterday (8/21/2026) my husband took this vehicle in for a routine oil change and upon the 100 point inspection was informed there was an oil leak somewhere from the engine. This vehicle is barely 2 years old and barely at 30,000 miles. There were 0 signs of a leak somewhere we had no idea. They completed diagnostics and determined it was the axle seal. Thankfully this was covered under warranty but their master mechanic shared with my husband that this is a very well known issue with the 2024 models and the fix is using the newer manufacturing parts. Again, there were no visible signs of a leak, there were no vehicle computer warnings of an issue other than the oil life alerts that are programmed.

My wife was driving our young daughters and the vehicle had multiple warning lights come on. Then several messages stated transmission drive unavailable. Then the vehicle stopped moving and stalled in a busy street. It would re-start but was idling at 3000rpm. However it would not move from where it died. It had to be towed to the Honda dealer. It was a very dangerous situation because it went from a check engine light to a dead vehicle in 30 seconds. Very unsafe!.

Component that failed & availability: the vehicle's primary electrical architecture and data communications network (can bus) failed during a safety recall service for the srs ecu and rearview camera. After attempting to complete the recall work, the vehicle is no longer able to start. Safety risk: the manufacturer's federally mandated safety recall remedy compromised the vehicle's critical safety and control infrastructure. This rendered a previously reliable family vehicle entirely inoperable, destroying its ability to communicate, start, or turn on. It poses a systemic safety risk if the corporate recall procedure itself causes severe electronic failures in consumer vehicles. Reproduction & dealer confirmation: yes. The failure was induced directly by williams Honda ([xxx]) during service on Thursday, xxx. The dealership's service manager explicitly confirmed to me that their technicians compromised the electrical architecture while performing the srs ecu and rearview camera recall work. The vehicle has remained dead at their facility ever since. Inspection by others: the vehicle has been actively inspected by dealership technicians in coordination with Honda engineering headquarters. It has not been inspected by police or insurance representatives, as no crash occurred. I have requested an inspection by a Honda corporate field technical specialist (fts). Warning lamps & prior symptoms:none. Prior to this appointment, the vehicle was in perfect electrical and mechanical working order. There were absolutely no warning lamps, messages, or symptoms of any starting or electrical problems. The vehicle had just safely completed a seven-hour road trip immediately prior to being dropped off for the recall work. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2018 Honda Odyssey 🔎.

The vehicle experienced multiple sudden engine stalls while driving in traffic. Specifically, the engine shut off unexpectedly and the transmission automatically shifted into park (p) while on the road, leaving the vehicle immobilized and unable to be manually shifted out of p. Restarting the vehicle was extremely difficult, which created a severe safety hazard and nearly caused a rear-end collision. The vehicle was inspected and confirmed by an authorized Honda dealer that the starter failed. The starter has since been replaced. The failed component is available for inspection upon request.

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.

See all problems of the 2020 Honda Odyssey 🔎.

After stopping at a red light the engine auto stopped and would not restart after releasing the brake. After 20 minutes of trying to turn the vehicle on/off it finally restarted. Serious safety concern since it was a busy road and the vehicle couldn’t be put into neutral to push it out of the lane. The vehicle is under 20,000 miles and in the warranty period. I haven’t taken it to the dealership to determine the issue however they did say there are no service bulletins for this issue. This is the first time it has happened but I have since turned off the auto start/stop before every drive in fear that it will cause a crash in the future.

I am filing a safety complaint regarding a recurring, severe defect involving the 2025 Honda Odyssey's starter motor and the factory-installed auto idle-stop (idle-stop) system. While driving, the vehicle's auto idle-stop system engaged as designed when coming to a complete stop in traffic. However, when trying to accelerate, the vehicle failed to restart automatically. The engine completely stalled out on an active roadway. Attempts to manually override the system and restart the vehicle using the ignition button failed completely, resulting in an immediate and dangerous loss of propulsion. This defect presents a severe and immediate traffic hazard, as it unexpectedly leaves the vehicle completely disabled and stranded in active lanes of traffic. It strips the driver of the ability to clear the roadway to safety, significantly increasing the risk of a rear-end collision. Multiple occupants, including passengers in the rear seats, were exposed to extreme danger due to this sudden propulsion failure. Despite bringing the vehicle to an authorized Honda dealership, the manufacturer has failed to provide a permanent safety remedy. Also Honda corporate has deny warranty replacement for the starter that’s causing the issue.

I was at the red light and the car wouldn't come out of idle. The battery light came on and the I tried to turn the car off and it just keeps cycling. I had to open the door for the car to cut off and then restart the car. This is the 3rd time this has happened and almost resulted in me and my children being hit.

While stopped at a red light or intersection, the vehicle's auto idle stop feature engages and shuts off the engine as designed. However, on multiple occasions, the engine has failed to automatically restart when the brake pedal is released. The vehicle remains stalled and unresponsive in the middle of the intersection or traffic lane, creating a safety risk to myself and other drivers, particularly at busy intersections. In some instances, the vehicle needed to be fully powered off and restarted before it would move again. This is a known and widely reported defect affecting Honda and Acura vehicles with the auto idle stop system, currently under NHTSA engineering analysis ea25004. The problem has occurred repeatedly and unpredictably, with no consistent warning beforehand. The vehicle and its auto idle stop system are available for inspection upon request. The problem has not yet been confirmed by a dealer, though I intend to bring it in for diagnosis. There were no warning lamps or messages before the failures occurred; the only symptom was the engine simply not restarting after an automatic idle stop.

I'm filing a formal safety complaint regarding my 2019 Honda Odyssey, VIN [xxx], & requesting an engineering-level review by american Honda. I've brought this vehicle to an authorized Honda dealer numerous times for recurring & increasingly serious electrical, engine/power-loss, & transmission problems. Despite thousands of dollars in repairs, the problems continue. The vehicle has unexpectedly shut off/lost power; the power sliding doors have failed & required manual opening; low-battery warnings have appeared; & the radio/infotainment system repeatedly loses power and resets. I have photographs showing the message: “anti theft system–this system has lost power. ” more seriously, the vehicle has malfunctioned in park, reverse, while shifting into drive, & while turning. Most recently, the transmission would not engage properly and the vehicle had to be shut off and restarted multiple times before it would go into drive. Delray Honda documented this transmission failure/no-drive incident on its August 2026 repair order. In may 2026, I brought the vehicle to delray Honda for a check engine management system warning. Repairs were performed, but the warning returned within days. Delray Honda then replaced the power distribution module, costing me approximately $2,000. I've spent thousands more dollars addressing these recurring problems without resolution. I understand Honda/NHTSA recall 19v-299 involved certain 2018–2019 Odysseys and a loss of power to the transmission control unit. My Odyssey appears to have been manufactured around the time of those Hondas that were covered by that recall. I'm not claiming without diagnosis that the defect is identical, but the similarity of the symptoms warrants an urgent investigation. I request that Honda open a formal safety case, review my complete service history, dtcs and tcm/pcm data, determine whether my vehicle has the same or a related defect, and review my prior repair costs for reimbursement. Thank you. Information redacted pursuant to the freedom of information act.

While at a stop light on a major road, the vehicles auto start stop engaged. Upon the light turning green, I released the brake and vehicle failed to restart. The vehicle put itself into park and flashed a warning message "problem detected. . . . . " . I pressed the start button, and at first the vehicle failed to start, making a clicking sound, consistent with a dead battery or starter. I had to press the start button 4 times before the vehicle restarted and I could proceed. I was extremely concerned as I had my wife and three kids in the car, unable to move forward on a major roadway. I have an appointment at the dealer for this Friday.

After stopping the car in a left turn lane in the intersection, the car engine, dash board and infotainment system shut down. No warnings or other items appeared, the car died. After scrambling since it put traffic to a standstill, I shifter to park and returned on the car. Which worked and allowed me to continue. This happened again 1 week later while at a red light.

See all problems of the 2023 Honda Odyssey 🔎.

Nhtsa recall 19v-299 / Honda campaign z4j. Sudden gear refusal, shifting malfunctions, and stalling. The premature structural failure of my 10-speed transmission is a direct consequence of the known factory software defect that violently shifts the car into park while moving.

When driving the vehicle it always has a lag in acceleration when pressing on the gas pedal. There are numerous times I can press the gas pedal and the car will not move. I've taken back to the dealer to see what their service department says.

My transmission has almost completely went out.

See all problems of the 2002 Honda Odyssey 🔎.

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.

My van has an auto-stop feature that shuts the engine off at stop lights. This feature will now occasionally shut the car off, but then fail to restart it. We have stalled out at intersections with the van not restarting for up to a full minute. This is incredibly dangerous and needs to be addressed immediately.

Starter failed.

Unknown, while driving when I was waiting at the signal (waiting for green signal to move) my vehicle automatically shifting from direct to park gear. Once shift to park then no other gears/buttons do not work, only I can turn off the vehicle and restart then all gears/buttons work to move on. This safety issue happened three times (6/25/2026, 7/13/2026 & 8/10/2026) on the road. I took my vehicle on 7/14/2026 to the dealer and they said they didn't find any issue after keeping the vehicle for six days with them. If this issue happens while a vehicle is moving on the road it is going to be a big disaster. After the 08second incident I reported to the Honda manufacturer too.

Starter failure due to heat. Vehicle has failed to restart several times while stopped in traffic and at a traffic light due to the auto idle stop function.

Numerous times since purchasing my van it has failed to start. At first it was just random at a stop light when I would forget to turn off the idle stop. Leaving me stuck at stop lights with a vehicle that won't turn on without multiple attempts. More recently it struggles to start after stopping to run errands or get gas or in drive thru lines. Having to depress the break pedal to the floor (much further than needed to even stop the car) and press and hold the on/off button while it chugs and attempts to start. The issue was able to be recreated by the dealer and they indicate that it is a starter issue but the part is on back order. Upon further discussion it appears that this isn't an unknown issue and that there is a current investigation into this issue. However, the service manager indicated to me that this isn't common and this was a "one off" incident.

Re investigation ea25004. We have had two instances of the van failing to restart after it shut off automatically at a red light. This caused a dangerous traffic situation where the van would not start up while traffic was approaching. The battery is in good condition and the van has just over 10,000 miles on it.

2025 Honda Odyssey with 21. 5k miles on it. Pulled up to a stoplight after a 3 hour drive. Auto stop turned the van off. When the light turned green the van failed to restart. Put the vehicle in park, turned it off, waited a few seconds and attempted to re-start it. Van restarted but very sluggish, like the battery was dead. Pulled in and parked. Van started normal the rest of the day. Took it to the dealer 2 days later. They noted the battery was a little low but no codes and no explanation for why it failed to restart. They checked alternator and starter and claim they are both good.