2021 Honda Odyssey

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.

After the MOST/FAKRA recall (NHTSA 23V-431) was completed, the center display showed a MOST bus/network loss message, then the infotainment system went dead and will not power on. The dealer would like 1800$ to repair this already "repaired" safety system. The rearview screen is unavailable when the screen is blank which is the same FMVSS 111 rear visibility failure the recall was issued to correct. TSB 20-049 describes the same network loss/ display condition. The recall repair did not permanently fix the MOST ring.

NHTSA ID

11766617

Incident

Sep 22, 2026

Two intermittent problems began about one year ago at approximately 43,000 miles (current mileage approximately 48,000): 1) Rearview (backup) camera intermittently fails. When shifting into reverse, the display screen goes black or the camera image freezes. This causes a loss of rear visibility while backing up, creating a risk of striking a pedestrian or object behind the vehicle. 2) Audio system intermittently produces loud static and distortion across all audio sources (AM/FM radio, Bluetooth, etc.). This distracts the driver and can mask audible safety alerts. Contacted a Honda dealership regarding recall coverage for these issues; the dealership stated this VIN is not included in the recall. Neither issue has been repaired. The vehicle is available for inspection upon request. These symptoms match NHTSA recall campaign 23V-431 (Honda MOST communication coaxial cable recall — intermittent loss of MOST connection causing rearview camera failure and audio popping/crackling); the dealership stated this VIN is not included in that recall.

NHTSA ID

11762897

Incident

Sep 1, 2025

The infotainment system and back up camera screen went completely black. We took it to Howdy Honda since there was a NHTSA Recall 23V-482 that they had fixed once before. Now though, they are saying the issue isn't covered by safety recall and that we have to pay $6900 to have it repaired. However this faulty camera system is a known issue. In addition to the recall, there has also been a class-action lawsuit filed Mar. 22, 2019 in the U.S. District Court for the Central District of California, owners of the affected vehicles report that the infotainment system – an integrated in-vehicle communication, navigation and entertainment system – behaves erratically, malfunctioning, freezing, and creating a safety hazard and distraction. This is exactly what happened with our vehicle. The defect caused safety-related systems (including backup camera functions) to fail. The defect also caused the entire center console to go black while the vehicle is in motion, and caused navigation and other dashboard features to shut down completely while in use. The lawsuit alleges Honda breached its own warranty by simply replacing defective parts with equally defective parts. This is exactly what they did with the first recall. And now they're trying to charge us $6900 to fix it.

NHTSA ID

11761842

Incident

Aug 12, 2026

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.

NHTSA ID

11761544

Incident

Sep 1, 2026

At 64,000 miles both rear shock absorbers failed (rusted), one completely the other on the verge. Driving the car was dangerous as the car became unstable at higher speeds when going over normal bumps and road holes. The repair including parts, labor, and necessary four wheel alignment was $1,051. The dealer did not acknowledge this being a common issue nor did they deny it. A google search indicates this is a common issue with Honda Odyssey Vans for the 2021-2024 manufacturing years. There were no warning indicators other than experiencing the effect of the shock absorber failures while driving the vehicle. The vehicle passed PA State Inspection earlier in 2026 (March).

NHTSA ID

11760327

Incident

Aug 1, 2026

The van’s CarPlay quit working while navigating thru Louisville traffic. The display scene indicated MOST Net off error. It has happened 5 times since then.

NHTSA ID

11760089

Incident

Jul 31, 2026

The van’s CarPlay quit working while navigating thru Louisville traffic. The display scene indicated MOST Net off error. It has happened 5 times since then.

NHTSA ID

11760088

Incident

Jul 31, 2026

The first problem I came across was Auto start. It always say temporary off because either I didn't press on the break hard enough or the Ac is running. Mostly it off saying it need to be charge and the company already put a battery in the car and it still say the same thing. The other thing that keep happening with the car is the screen that pop up the back camera and also control the air conditioning.it shut off and mos network failed and trun off and it keep going off and on. Im scared imma drive and it gonna shut off while driving already it hard at time using my back cameras since the screen work when it want to. I did talk to the dealership about the car and the problems since they said they check it and it was ok but I'm still having problem. I only had the car for 9 months and the problem start happening 2nd month with the Auto start and 5 months for the mos network fail within me having the car.

NHTSA ID

11759833

Incident

Dec 31, 1969

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 2020-2022 Odysseys with a customer complaint of the power sliding door not opening or closing under its own power. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 Odysseys with a customer complaint of the power sliding door not opening or closing under its own power. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 Odysseys with a customer complaint of the power sliding door not opening or closing under its own power. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 Odysseys with a customer complaint of the power sliding door not opening or closing under its own power. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 Odysseys with a customer complaint of the power sliding door not opening or closing under its own power. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to you attempting a repair of any kind.