Owner-reported complaints naming the electrical system, filed with NHTSA
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Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories. Every record below is an owner-reported complaint about the 2018 Honda Odyssey submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 266 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 266, in the owner's own words
Water intrusion from cracks on the seam sealant on the roof, rear of the drivers side make the 3rd row seatbelt get wet and the tailgate lock to fail. Tailgate button is not operational and tailgate locks/unlocks randomly after rains.
My vehicle was previously serviced under NHTSA Safety Recall 23V-431 for the MOST bus/FAKRA fiber-optic connector defect. The recall remedy has completely failed. The entire infotainment network blinks on and off, which when off completely disables my rearview safety backup camera and dashboard navigation. The dealership is demanding $8000 to replace the system and Honda USA Customer Service has refused to help, stating it is no longer covered. The vehicle is difficult to operate without the federal safety backup camera and the infotainment system disabled. The initial recall repair did not permanently resolve the safety hazard. My wife and I are both [XXX] and bought this particular vehicle for all the additional safety features that now are unreliable. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On October 14/15, 2026 it rained. At approximately 12:25pm on October 15, 2026 my power lift gate stopped working. It wouldn’t open with any of the controls. Upon further inspection we noticed the control module had water damage. We replaced the module on October 21,2026. It is still having issues. It opens with the controls but won’t close using the same controls. You have to manually close it.
It started back in July 2026; I had a warning pop up that some functions aren’t available and to clean front windshield camera. We did. Still received the warning. Sometimes it’s there and sometimes it’s not. I can go down the highway and it will come up and then a few miles later it’ll turn off and the functions work. Even driving around town it does it. I have noticed there are a lot of drivers of the 2018 models having this same issue.
In XXX, the power tailgate on my 2018 Honda Odyssey stopped working. I took the vehicle to authorized Honda dealer Fred Beans Honda of [XXX]. The technician documented in writing on repair order #XXX (XXX): "There is water leaking onto the power tailgate control unit. Technician found the water leak going into from the back of roof on the left side. Needs a new power tailgate control unit." Water entered through the rear body seam seals and dripped onto the power tailgate control module (P/N 74970-THR-A12). The removed module showed severe blue-green corrosion -- it does not fail on its own at 31,500 miles. Safety concern: A tailgate whose control module is destroyed by water intrusion cannot be relied on to latch or stay closed; an unlatched or unexpectedly opening tailgate while driving endangers occupants and surrounding traffic. Known defect, not isolated failure: Honda issued a TSB on rear body seam-seal water intrusion on 2018-2019 Odysseys; federal class action Case No.XXX (XXX.) covers 2018-2021 Odysseys with defective polyurethane seam seals destroying the power tailgate control module; numerous owner reports in the NHTSA database describe identical failures. What I did: The dealer quoted $1,302.88. I first asked American Honda by phone for goodwill coverage and was denied. I repaired it myself with a genuine Honda module ($215.57, Order #XXX, XXX); total out-of-pocket $416.92. On XXX I submitted a written goodwill reimbursement request online (case #XXX, continuing prior case #XXX); on XXX Honda denied it as not covered under any campaign, even though the failure is caused by the documented seam-seal defect that is the subject of the pending class action above. What I am asking NHTSA: record this complaint and consider investigation/recall of the 2018-2019 Odyssey seam-seal water intrusion defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I own a 2018 Honda Odyssey Touring. On May 29, 2026, I started the engine on my Odyssey and several dashboard system warnings appeared. The internet suggested having the battery tested and it was getting low, so I replaced the battery. The warning signs remained and caused several Honda Sensing safety and driver-assistance systems to become unavailable, including Adaptive Cruise Control (ACC), Lane Keeping Assist System (LKAS), Collision Mitigation Braking System (CMBS), Road Departure Mitigation, and Auto High Beams. Additionally, a Brake System warning appears on the dashboard. I have video recording of these warnings from when they first appeared in May. On September 2, 2026, the lights disappeared out of nowhere and all components worked. Later that same date, the lights were back and the components stopped working again. This happened again on October 13, 2026 - lights went off, then returned later in the day. The recurrent temporary reprieve from the lights makes me wonder if there is an electrical short in the rearview camera that controls those safety features. The diagnostics cost of this alone was going to be nearly $200. As numerous other similar complaints have been made to NHTSA, I am hoping this issue will be investigated and addressed - it is concerning that a single system failure is causing multiple safety features to be disabled - notwithstanding that is is difficult to know when to be worried about warning lights when the dashboard is full of them.
Front radar/camera failure.All yellow ADAS warning lights turn on simultaneously (Lane Keeping Assist, Adaptive Cruise Control, Collision Mitigation Braking System, and Road Departure Mitigation). Problem has been confirmed by dealer. Safety is at risk by not having this crash prevention features on.
1. Component failed: The low-pressure fuel pump failed. The vehicle is currently sitting at my residence and is available for inspection upon request.2. Safety risk: The vehicle stalled completely while driving, causing an immediate loss of propulsion on a public road, creating a severe collision risk.3. Confirmation: The problem has been pulled and confirmed by an independent service center (AutoZone diagnostic scan tool), which pulled a code to replace the fuel pump.4. Inspection: The component has not yet been inspected by the manufacturer, police, or insurance representatives, as the manufacturer is currently refusing to authorize an inspection due to a salvage title.5. Warning lamps/Symptoms: Immediately prior to the stall, a complete cascade of warning lights appeared on the dashboard simultaneously, and the vehicle sputtered aggressively upon attempting to crank and restart.Assessment: This is the identical, textbook physical failure condition of NHTSA Campaign 23V-858 regarding defective factory-installed Denso fuel pumps in 2018 Honda Odysseys. American Honda Corporate is using an automated salvage title database filter as a pretext to deny mandatory federal safety recall remedies on a vehicle with zero structural fuel system damage.
All systems relating to the forward facing camera have failed.
This vehicle is actively immobilized on private residential property with its central ADAS safety networks and Advanced Driver-Assist networks completely crashed and offline (DTC U3000-49) and active short-to-ground circuit failures (DTC B2035) rendering the passenger sliding doors completely inoperable, creating an immediate entrapment and safety hazard. These progressive component failures cascade directly from severe environmental moisture intrusion inside the rear tailgate enclosure. This exact water migration vector intersects directly with active federal safety campaign NHTSA Recall 26-V-423 (Rearview Camera Failure), which isolates moisture intrusion into the panel housing as the root factory manufacturing defect. A manufacturer franchise location documented active water leakage onto the Power Tailgate Control Unit and heavy corrosion on the wiring connector under a previous Repair Order but performed zero interim moisture sealing, corrosion cleanup, or terminal mitigation, allowing progressive water migration to completely destroy the wiring system harness. Furthermore, American Honda Corporate Case Management explicitly stated on a recorded verbal line that the manufacturer is denying all repair assistance to remedy these cascading safety campaign electrical defects under an active corporate case. The manufacturer is in open default of its statutory federal obligation to remedy a safety recall defect free of charge to the consumer.
Rear sliding door failure, doors wouldn't latch properly resulting in opening when driving down the road. Took to dealership for repair. Paid $1633.78 they replaced rear latches 3/31/2026. Rear latches failed to open resulting in one Rear door cable breaking and one that will not open at all 9/1/2026. Neither door opens at this point.
The windshield-mounted front monocular camera (Honda Sensing unit) overheated and failed/burnt out. This failure completely disabled the Forward Collision Warning, Automatic Emergency Braking, Lane Departure Warning, Lane Keeping Assist, and Adaptive Cruise Control systems, triggering multiple safety system warning lights on the dashboard.
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)
The contact owns a 2018 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, but the vehicle failed to accelerate, requiring the contact to forcefully depress the accelerator pedal to move the vehicle. The contact stated that multiple warning lights unexpectedly illuminated, including the Road Departure Mitigation system, Collision Mitigation Braking System, and Lane Departure Warning system warning lights, and all related safety features failed to operate. The vehicle was not diagnosed or repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 105,000.
A warning for Power Tailgate Problem keeps coming up. It tried to open multiple times while driving, beeping at us. It wouldn’t open with the buttons at all. We had to manually open and close it. This makes the second time it’s done it. And it always has to do when it rains. Honda knows this is a well known issue with their odyssey’s and it needs recalled. The dealership wants us to pay for a well known issue. We had a friend with the same year odyssey and the same thing happened but their tailgate completely opened a few times while driving.
Early in a driving session, the accelerator pedal, when applied pressure, will not rev the engine and provide power to the wheels for 1-3 seconds. This issue happens once or twice in a driving session and then doesn't do it again until a future driving session. It is random and doesn't happen every session. This issue causes me to have concerns entering traffic, particularly left turns, as I am unsure if the vehicle will accelerate when needed to safely enter traffic. I have had Service Bulletin 19-124 completed on my vehicle and it did not fix the issue.
2018 Honda Odyssey Elite I am reporting an unresolved issue stemming from a failed recall remedy for NHTSA Safety Recall 23V-431 (Honda TSB 20-049) regarding the MOST bus fiber-optic network. My vehicle has been taken to an authorized Honda dealership twice to receive the official recall repair (replacing the FAKRA network connectors). Despite these two repair attempts, the network defect continues to escalate.The vehicle experiences sudden, violent, and near-constant loud popping and clicking noises through the audio speakers while driving. This occurs both at random and predictably when driving over bumps. Following the increase in these network pops, the vehicle's Blu-ray player completely failed and stopped working. Furthermore, the central infotainment screen frequently freezes, reboots, and displays an "Audio Connection Lost" error message, which also cuts out the FM radio tuner entirely.Crucially, this fiber-optic network failure recently caused a total loss of the digital instrument cluster and speedometer while driving. While this complete cluster blackout has only occurred one time so far, it presents an unpredictable and dangerous safety hazard, as I am left with no knowledge of my current speed or critical vehicle safety alerts while in motion.The manufacturer’s standard recall remedy of swapping plastic connector clips is ineffective for my vehicle. The recurring failures after two repairs indicate a permanently compromised factory wiring harness or a damaged network module that is continuously dropping the signal. The manufacturer needs to authorize a thorough diagnostic and full harness/module replacement to permanently resolve this safety defect before the instrument cluster fails again.
power tailgate stopped responding to all inputs (button, remote, driver switch), dash displayed a "liftgate power failure" message, manual latch still functions. fuses are good, connectors looked clean, and the boot is intact, points to module failure
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
Failure of the forward-looking multipurpose camera after a simple battery change. Many safety features are now inoperative including emergency braking, lane keeping assist, adaptive cruise control, among others. Ultimately, a routine maintenance item (battery replacement) is causing the failure of vehicle safety systems.
On 7/28/26, my 2018 Honda Odyssey began displaying the following warning lights and system messages on the dash: •Adaptive Cruise Control (ACC) system error •Lane Keeping Assist System (LKAS) error •Auto High Beam system error •Collision Mitigation Braking System / forward collision error These errors were present before I replaced the 12V battery. I had the battery tested at that time and it failed a load test, so I replaced it, expecting the ADAS-related errors to resolve. After the battery replacement, the original errors remained, and additional warning lights appeared, including a transmission system problem indicator and a brake system warning light. I disconnected the negative battery terminal for approximately 10 minutes in an attempt to reset the modules, then reconnected it. After reconnection and a period of idling, further warning lights appeared that had not been present immediately after the battery swap. I have not been in a collision, and there was no impact to the windshield, front bumper, or brake components at any point during this period. The vehicle’s brake pedal feel has remained normal. Because these errors were present before the battery was replaced, the battery does not appear to be the root cause, and the underlying issue affecting the ACC, LKAS, auto high beam, and collision mitigation systems remains unresolved. I have seen reports from other Honda owners describing similar cascading ADAS and system warning lights on comparable Honda models.
I am reporting American Honda’s ongoing failure to safely remedy critical safety defects and recalls on my 2018 Honda Odyssey (purchased new), resulting in severe vehicle degradation and a life-threatening traffic hazard. The vehicle has been to an authorized dealer over 21 times.SAFETY RECALL NEGLIGENCE & POWERTAIN DAMAGE: At 95k miles, the vehicle displayed active check engine codes P0087 (Low Fuel Pressure), P0420, and P0430. The dealer replaced injectors, but severe fuel issues persisted. The dealer utilized stall tactics, claiming they "could not duplicate" ongoing stalling/hesitation symptoms. When the official fuel pump recall was issued, the bulletin mandated priority service for vehicles actively displaying symptoms. My vehicle met these parameters. However, when I attempted to get the recall performed at 111k and 120k miles, the dealer denied service due to part shortages, instructing me to drive the vehicle until it "completely broke down." Because Honda failed to supply recall parts to a symptomatic vehicle, I was forced to drive it a defective car for an additional 46,000 miles. A replacement pump was installed at 166k miles, but the prolonged forced operation directly caused the high pressure pump to fail and raw fuel to melt both catalytic converters. The dealer issued a $6,000 repair estimate for damage engineered entirely by Honda's recall delays.LIFE-THREATENING TCM FAILURE: One day after a related service visit, the Transmission Control Module suffered a catastrophic electrical failure. The engine completely shut off without warning while I was actively facing four lanes of oncoming traffic, creating an immediate, severe collision risk.BROKEN SLIDING DOORS: The power sliding doors failed under 12 months of ownership. Despite 7+ repair attempts, they remain broken, posing a severe structural/occupant safety hazard. Requests for trade-in intervention since 60k miles were systematically ignored.
The contact owns a 2018 Honda Odyssey. The contact stated that while a customer on Turo was driving the vehicle, the instrument panel warning lights flashed and the climate control system failed to function. The vehicle was restarted multiple times, but the instrument panel warning lights remained illuminated. The contact stated that while being driven, the vehicle was pulled over by law enforcement because the taillights failed completely. The vehicle was taken to the dealer, where it was diagnosed that the gauge control module had failed due to corrosion from water damage. Upon further inspection during the replacement, the dealer discovered additional failures within the body control module and the taillight wiring harness. Technicians determined that the electrical failures were caused by water leaking from the rear windshield into the tailgate area. The vehicle was repaired; however, the water leak source was not addressed or sealed. The manufacturer was notified of the failure. The failure mileage was 144,411.
The power tailgate control module failed. There was water intrusion and the module was corroded. I replaced the module and the power tailgate worked properly. About a month later we had some heavy rain and the problem came back. The dash displayed “power tailgate problem” and the tailgate would intermittently unlock on its own. I inspected the one month old power tailgate control module and noticed water and corrosion in the enclosure.
There are multiple systems that have failed in the vehicle: — Lane Keeping Assist Problem — Collision Mitigation System Problem — Auto High Beam Problem — Adaptive Cruise Control System — Road Departure Mitigation System Problem Here’s the issue, I’ve seen multiple people with this issue saying it’s related to the camera system. I’ve reported it multiple times and to the dealer and have not received a straight answer. This needs to be investigated. How many complaints do you need to receive about safety issues in a make/model to do something about it/
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
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