2019 Honda Odyssey

The Office of Defects Investigation (ODI) has received 414 reports of connecting rod bearing failures in the 3.5L V6 engine used in the following vehicles: Model Years (MY) 2018-2020 Acura TLX, MY2016-2020 Acura MDX, MY2016-2020 Honda Pilot, MY2018-2020 Honda Odyssey, and MY2017-2019 Honda Ridgeline.  The subject engine failures were analyzed as part of a Recall Query (RQ24013).  It was determined that these engine failures are outside the scope of Honda Recall 23V-751. Further, evidence gathered in conjunction with RQ24013 does not suggest this failure is caused by the same crankshaft manufacturing defect that is addressed by Honda in Recall 23V-751.  Based on analysis of data from RQ24013, NHTSA has closed that investigation. The significant number of reports of engine failure in vehicles outside the scope of RQ24013 presents a potential safety risk that warrants further investigation.  ODI is opening this Preliminary Evaluation (PE) to further evaluate the scope and severity of the potential problem and to fully assess the potential safety-related issues.  To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

On October 28, 2025, the Office of Defects Investigations (ODI) opened PE25018 to investigate complaints of inadvertent deployment of the side curtain and/or side thorax air bags. These complaints concern model year (MY) 2018-2022 Honda Odyssey vehicles manufactured by American Honda Motor Co. (Honda). Honda issued recall 26V227 on April 9, 2026, to address concerns of inadvertent side air bag deployment. In the recall filing, the company stated that “[a]s of April 2, 2026, Honda has had 130 warranty claims, 25 reports of an injury, and no reports of death related to this issue from January 24, 2017 – April 2, 2026.” Honda states that the Supplemental Restraint System (SRS) Electronic Control Unit (ECU) contains incorrect deployment parameters for the side thorax and side curtain air bags, which may cause inadvertent deployment when the vehicle encounters strong road impacts, such as driving over potholes, speed bumps, or road debris. Honda stated that the SRS control logic for the second and third rows of seating contained an insufficient deployment threshold margin, allowing signal inputs to be misinterpreted as side impacts and causing inadvertent deployment of the side thorax and side curtain air bags. Recall 26V227 states that dealers will reprogram or replace the SRS ECU with improved air bag deployment parameters. Consumers received notice of this recall in late May 2026. In view of the recall being conducted by Honda, ODI is closing this Preliminary Evaluation (PE). The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

On November 8, 2024, the Office of Defects Investigation (ODI) opened Recall Query RQ24013 to assess the scope of Honda recall 23V-751 after receiving complaints that alleged connecting rod bearing failures in vehicles that were not within the scope of recall 23V-751. In November 2023, Honda recalled 248,999 various Model Year (MY)2016–2020 Honda and Acura vehicles equipped with the 3.5L V6 engine. Honda recalled these vehicles due to a crankshaft manufacturing defect that caused premature connecting rod bearing wear and engine seizure. While the out-of-scope failures involved in these complaints appear to have a very similar failure mechanism as the recalled engines, a thorough analysis of all available data from Honda has not indicated that the same manufacturing defect exists in the out-of-scope engines as the engines recalled by 23V-751. Based on this analysis ODI has determined that Honda has properly defined the scope of recall 23V-751. Consequently, ODI will close this RQ investigation.  NHTSA will continue to investigate these complaints of engine failure as part of a new Preliminary Evaluation Investigation (PE25008). The Agency reserves the right to take additional action if warranted by new circumstances.

My 2019 Honda Odyssey Elite started giving error code P219A and stalling randomly whenever the auto-idle stop feature was enabled. The vehicle stalling in traffic is obviously a safety issue but luckily was able to be restarted. The vehicle has stalled on multiple occasions. I researched this online and found a warranty extension on the fuel injectors for this issue under Service Bulletin 21-010. I brought the vehicle to the Honda dealer and they confirmed that the issue is the fuel injectors and is related to SB 21-010, but informed me that my particular VIN number is not included in the warranty extension and that I would have to front the money for the repairs. I called Honda Customer Service to complain about me having to cover this repair out of pocket when this is a known issue with this vehicle, but they were adamant that Honda would not cover any cost since my particular VIN was not under the warranty extension. I disagree with the way Honda is handling this issue and they should be the ones paying the bill for this poor workmanship and a known defect in their fleet.

NHTSA ID

11776725

Incident

Nov 6, 2026

I am reporting a serious premature engine failure in my 2019 Honda Odyssey EX-L at approximately 88,000 miles. The vehicle has its original factory-installed engine and has been regularly maintained, including routine oil changes. While driving with my wife and young children, the vehicle experienced an engine stall and loss of power, creating a significant safety hazard. An unexpected loss of engine power while in traffic or at highway speeds puts the driver, passengers, and surrounding motorists at risk. Following the incident, a Honda dealership performed a diagnostic inspection and identified abnormal noise originating from the lower engine block, consistent with rod knock. Metal debris was also found in the engine oil, indicating significant internal engine damage. The dealership recommended engine block replacement, with an estimated repair cost of approximately $14,000. The vehicle was deemed unsafe to operate. Honda informed me that my VIN is not covered under the existing engine recall. However, I am aware of NHTSA Preliminary Evaluation PE25008, which investigates connecting rod bearing failures in certain Honda and Acura vehicles, including 2018–2020 Honda Odyssey models. Given my vehicle's model year, original engine, internal engine damage, and loss of power while driving, I believe this incident warrants investigation in connection with PE25008. I am requesting that NHTSA review this failure, determine whether it is related to the connecting rod bearing issues under investigation, and evaluate whether additional vehicles excluded from the existing recall may be affected by the same safety defect. I can provide dealership diagnostic findings, maintenance records, photographs, videos, and repair estimates.

NHTSA ID

11776504

Incident

Nov 2, 2026

Just starting the vehicle one morning all of these warnings appeared including adaptive cruise control problem, lane keeping assist problem, collision mitigation system problem, road departure mitigation system problem and auto high beam problem. We replaced the 12V battery thinking that was the cause but this did not solve the problem. We checked the fuses that were recommended to check and they were intact. We then did the 10 minute drive as suggested to reset these systems which also did not work. Then we used an OBD2 sensor to reset/clear the codes which also did not work, they immediately came back once the car started again.

NHTSA ID

11776485

Incident

Nov 6, 2026

My 2019 Honda Odyssey, with approximately 93,947 miles, has developed an intermittent electronic braking and driver-assistance system malfunction. A yellow "Brake System" warning light appears on the dashboard, accompanied by warnings indicating that Adaptive Cruise Control (ACC) and Collision Mitigation Braking System (CMBS) are unavailable. A diagnostic scan identified trouble code U3000-49, suggesting a potential electronic control system malfunction. The exact defective component has not been confirmed. This is a serious safety concern because the vehicle's automatic collision mitigation and emergency braking assistance may unexpectedly become disabled, increasing the risk of a collision, especially during sudden braking or highway driving. The warnings occur intermittently without a clear trigger. The issue may involve a faulty camera, sensor, or electronic control module. The vehicle has not yet received a confirmed root-cause diagnosis from Honda. The vehicle remains available for inspection upon request. I request that NHTSA investigate whether this represents a widespread safety defect affecting 2019 Honda Odyssey vehicles.

NHTSA ID

11776360

Incident

Nov 5, 2026

When driving the vehicle stutters. Up to 9 warning lights come on and the vehicle goes into limp mode while driving and will not shift. RPM continues to go up. When scanned the vehicle shows codes that are associated with HONDA warranty extension 21-010 however, Honda consistently denies coverage for this vehicle.

NHTSA ID

11776186

Incident

Sep 1, 2026

1- engine fully restart after auto idle feature engaged. 2- this has happened multiple times over the past couple of weeks. With one instance- it attempted to restart when I removed my foot from the break. I was on a downward incline leaving a parking lot, pulling in to a busy road. My car rolled in to traffic and I was unable to start the engine. I had a disabled vehicle, in traffic. The second time, I was also at a slight downward incline at a stop light in a less than desirable part of town. When my foot was removed from the brake, the engine would not engage and car would not move. I was blocking a lane of travel. Multiple warning light occurred, with a written warning that stated “transmission problem. Apply parking break when parked.”

NHTSA ID

11776062

Incident

Sep 12, 2026

Honda Odyssey EX-L. Vehicle was showing tailgate issues starting around 30,000 miles. Dashboard will sometimes say "Power Tail Gate Problem". When opening the power tailgate the vehicle will beep and refuse to open. Other times, the tail gate will open on it's own without any input. Upon looking into the electrical wiring on the driver's side trunk compartment, the 74970-THR-A12 2018-2024 Honda Odyssey Control Unit Power Tailgate was completely soaked with water and showed signs of corrosion. Suspected issue: Due to rain or car washing, water leaks into that compartment somehow and into the control unit and causing corrosion. Many users online are reporting this issue, suspecting leakage from the C pillar.

NHTSA ID

11775810

Incident

Oct 10, 2026

The front camera that controls all of the safety features has malfunctioned. The camera will randomly function about once per month without issue, typically when the temperature outside is higher than 100 degrees and it has been parked facing the sun. Honda confirmed it is the front camera, estimate is over $2k to replace and recalibrate the camera. This issue is not from regular wear and tear and there has been no accident that could have caused it. This is a common manufacturer issue with Odysseys. My brother has a 2020 and they had to replace their front camera after just 4 years. I found many others on Reddit with the same problem.

NHTSA ID

11774705

Incident

May 15, 2026

Service Bulletin - Under certain circumstances, after coming to a stop and the auto idle stop feature engages, the vehicle may not automatically restart. In other circumstances, vehicles may experience a slow crank or fail to start under hot ambient temperature conditions.

Dealer Message - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. In other circumstances, vehicles may experience a slow crank or fail to start under hot ambient temperature conditions. The customer should be able to restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.

Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, your vehicle may not automatically restart.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords, 2016-2020 Civics, 2017-2020 CR-Vs, & 2018-2020 Odysseys that have been diagnosed to be in need of the low-pressure fuel pump, fuel strainer, fuel meter or fuel tank replacement.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords, 2016-2020 Civics, 2017-2020 CR-Vs, & 2018-2020 Odysseys that have been diagnosed to be in need of the low-pressure fuel pump, fuel strainer, fuel meter or fuel tank replacement. If you have a vehicle that match the qualifiers listed below, AHM requests to have the photos of the lock ring & the low-pressure fuel pump flange taken & sent to TIS (click HERE for example photos).

Service Bulletin - MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather (specifically near or below freezing temperatures). Usually after a long drive (around 2 hours) and accelerating while cornering.