2016 Honda Odyssey Complaint Log

The spool valve had a complete seal failure leaking oil onto the alternator causing the alternator to fail. As result the entire electrical system failed, shutting off all propulsion of the van. This occurred while the vehicle was in the high speed left lane on [XXX] @ the [XXX] exit. I had to coast the vehicle across two lanes of 75 mph traffic, cars and large tracker trailers. I was passed by several cars and tracker trailer while coasting across the two lanes of traffic as there was no shoulder on the left side of [XXX]. There were no warning lights prior to the event. American Honda Motor Co. issued Service Bulletin [XXX] on [XXX] to Honda Dealers/Service about the potential for the spool valve casket to leak and fail so that Honda could check for this failure and replace the defective spool valve. The service bulletin covers five (5) different Models and for some Models six (6) model years. The part number identified is 15810-R70-A04, Front Rocker Arm Oil Control Valve (Spool Valve). The correction action is to inspect the front rocker arm oil control valve for leaks and, if needed replace it. The possible causes are the gasket on the front rocker arm oil control valve has deteriorated or the gasket groove is out of SPECIFICATION. Service personnel at Jeff Wyler Honda, 949 Burlington Pike Florence KY 41042, admitted to replacing this spool valve on my Honda Odyssey model several times a month. They admitted that the failure of the spool valve seal can leak oil on to the alternator causing the alternator to fail causing a complete loss of the electrical system and propulsion, seen reports of complete engine fires due to the spool valve gasket failure, noted that the the service bulletin was not attached to my vehicle VIN as did Honda of Jackson 1408 U.S. Highway 45 ByPass Jackson TN 38305. Because America Honda Motor Co. failed to attached the service bulletin to my VIN, my vehicle was not inspected properly for this safety defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Dear Honda Customer Service, I am writing to formally report a serious issue with my 2016 Honda Odyssey and to request a full repair at no cost due to what appears to be a manufacturer defect. In March 2024, my vehicle began experiencing a mild shudder/vibration noise, and the Check Engine Light turned on. I took the vehicle to Vacaville Honda, where a diagnostic was performed. The technicians informed me that the engine has a faulty VCM (Variable Cylinder Management) system, causing misfiring due to oil leakage on the spark plugs and piston rings. The only solution given was to replace the engine at a cost of $6,000, which is an unreasonable expense for a known issue related to Hondas VCM system. I have maintained my vehicle regularly at Honda dealerships and followed all manufacturer-recommended maintenance schedules. This engine failure is not due to negligence or wear and tear, but rather a design defect that has affected many Honda owners. Given these circumstances, I respectfully request that Honda cover the full cost of the engine repair or replacement under a goodwill warranty. I also ask that you investigate whether this issue qualifies for a recall or extended warranty assistance. Please respond as soon as possible, as my vehicle is currently unsafe to drive. Thank you.

Our Honda Odyssey was in for regular maintenance around 70,000 miles. Our Odyssey currently has about 71,000. All maintenance has been completed by Honda of Chantilly, except two oil changes which were done at a Honda dealer in SC. Shortly after the regular maintenance the car would jerk while driving (like hitting a pot hole or a bad shift). We took the Odyssey to the dealership and had to have diagnostics run to try and identify the problem. I was told there was a service bulletin that identified the problem and there are a list of steps to address the issue. On [XXX], We started with the computer update and transmission fluid flush to see if that fixed the issue. We were going to replace the trans cap Assembly but the parts had to be ordered. After we had that service completed, we took it home ([XXX]) to wait for the Trans Cap’s to come in to have those replaced. On [XXX] the Odyssey kicked again and I contacted David Burnell our Service Advisor. He sent an estimate showing the next step is to replace the Torque converter, and the rack and pin should also be replaced. In general the Torque Converter should last around 200,000 miles and the Rack and pin should make to past 150,000. I know we’re outside the 5yr 60,000 mile warranty, but you can’t tell me these two items should go bad on a vehicle regularly maintained at a Honda dealership. Due to the kicking/ jerking of the car we felt unsafe driving it with our kids in it. We took the car to the Honda dealer to have repairs done. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

We ask to rotate tires, and at that point we find CRACKS on inside wall of tires/ 2 pcs size 235/65/R17. see pictures provided. If we didn't discover this , it might be catastrophic failure/ explosion of tire. New Tires were installed immediately to avoid accident.

My vehicle problems started on February 6, 2024 while my daughter was driving back to her house. My 2016 Honda Odyssey EXL started shaking violently at 55 - 60 mph. Upon towing my vehicle to have my certified mechanic to check it out, check engine light was on with codes and misfires. He determined that the variable timing valve solenoid was bad. He replaced faulty part as well as both oil pressure switches and it then came up with check engine light, as well as FCW, LDW, & anti-skid warning lights!? It also had a couple different codes. He then replace other variable timing valve solenoid on front of the engine. After taking vehicle to dealership, to get diagnosed, they suggested several repairs totaling over $3800, which none could insure that it would fix problem (2 of their suggestions were already done by my mechanic). Taking dealership suggestions, my mechanic replaced spark plugs and coil boots, adjusted valves which were fairly close, along with new valve cover gaskets. Now my vehicle runs better but has this engine knock when engine switches from ECO mode to regular full cylinders. Asked dealership about checking/reprogramming control module, but they won't do it!? Any suggestions??? Considering purchasing bypass kit even though I will lose gas mileage

Left passenger sliding door cable snapped while trying to open door, will not close or latch

The car seat’s affiliated app and buckle’s vehicular heatstroke prevention technology didn’t work right, and a potential privacy safety concern. A colleague and I (both CPST-I’s) were demoing her seat. 1- Privacy concern: I was able to download the app and connect to her seat from outside her vehicle, gaining access to her child’s name, child’s birthdate, and a map that showed me the approximate location of where she drove. The seat owner did not have to approve my access to her seat. A stranger could access a child’s personal information with this lack of security. I was given “limited access” as the second connector but was actually able to see more details than the seat’s owner 2- The heatstroke prevention technology- the car seat buckle and affiliated app- glitched several times. It showed different alerts between two apps that accessed the same car seat. User A is car seat owner, user B is me: -After the car seat was buckled for a 1.5 hour drive in User A’s car, user A’s app logged 0 minutes in the seat. User B’s app showed accurate time the seat was buckled. -When the seat was buckled, User A and User B received completely different “child left in car” alerts at different times. The seat was left buckled overnight and did not alert user A or B that a child was left in the car. Despite receiving no alert, user B’s app logged the child having sat 7 hours in car seat overnight. -When the seat was left unbuckled and empty, user A received an alert that the child was still in the seat. Despite getting that alert, their app still showed 0 minutes logged in the seat. 3. The app says “buckled securely” when the buckle stalk is flipped up toward the child and didn’t actually require any buckling of either buckle or chest clip. 4. The app said the seat was installed correctly when it wasn't, and the installation directions wouldn’t continue unless the load leg was in place, which some vehicles don’t allow didn’t get great pics.

Consumer complaint: Repeated failed batteries (3), alternators (3), Start button (1) and left stranded multiple times due to no start. Problem: Honda Odyssey keyless entry computer board not fully sealed. This allows dendridic growth of corrosion on the board. This causes a short that endlessly sets the vehicle ignition into "Run" position. Eventually this shorts the alternator and drains battery. Solution: Cleaned and seal affected area. You can find a repair video and explanation here: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The sliding door is having issues and is not stopping as my child is exiting the vehicle he had almost been crushed by the door.

Left drivers side seat back does not lock on second row seat. This puts passengers at risk for injury. We are working to schedule an appointment with the dealer for inspection / fix. There are no warnings associated with this failure. We are unsure when the defect occurred, as our children typically sit in this seat.

The passenger side second row seat will not lock. It has been diagnosed by a Honda dealer that the seat back frame part number 81326-TK-A22 needs replaced. A recall has been made for the drivers side second row seat in bulletin 18-026. The part number is 81726-TK8-A22. It is the seat frame as well. Honda said they would assist me in paying 1/3 of the bill, but I was responsible for the remainder of the balance. But I see it that there was a seat frame issue with the drivers side second row seat and now I also have a seat frame malfunction on the passenger side second row. I believe they should cover the passenger side as well because of it being an important safety issue.

While driving the engine started to run rough and the vehicle started to decelerate. The check engine light and the traction control light came on. I let up on the gas pedal, the van continued to run rough. I made it home and the next day took the van to a mechanic, he told me that he observed oil fouling on the #3 spark plug, consistent with worn piston rings. The van is a 2016 Honda Odyssey with 91,000 miles.

My car technician found that my car has leaking problems, and is burning engine oil for a long time which means the engine oil leaking from the engine that might cause fire or damage engine and cause serious engine failure and this is a serious safety concern. I heard this is a common problem for Honda cars. Please advise to recall the vehicles with this problem. Thank you very much.

My wife experienced a sudden loss of power and a very rough running engine at interstate speeds. The check engine light as well as the FSW lights indicated problems with the engine. We brought the vehicle into a Honda dealership for diagnosis. The technician observed an oil soaked spark plug in the #3 cylinder which caused the issue. There were no lights associated with the issue until the sudden loss of power. This dramatic loss of power put her at risk as she limped to a safe area. Honda not only recommends replacing the plug but also all the rings on the rear three cylinders to make the vehicle safe. This is the second time this same vehicle has experienced the same failure and it appears to be an issue with the VCM system on this model. First instance was around 60k and now at 120k.

The contact owns a 2016 Honda Odyssey. The contact stated that the check engine warning light was illuminated. The vehicle was taken to a dealer and the contact was later informed that the piston ring on cylinder #3 was defective. The manufacturer was notified of the failure but offered no assistance. The vehicle had been repaired. The failure mileage was approximately 48,000.

The contact owns a 2016 Honda Odyssey. The contact stated while driving 65 MPH and depressing the accelerator pedal to pass another vehicle, the vehicle hesitated to respond and the engine sputtered. Additionally, the contact stated while driving from a complete stop the failure recurred. There was no warning light illuminated. The contact stated that the failure had been recurring while driving. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was notified of the failure and referred the contact to the dealer for diagnostic testing. The failure mileage was approximately 76,000.

My car is having misfire since last one year. After diagnosis, my mechanic replaced the spark plugs when I received the engine light sign. Within couple of months I am having the same issues and the spark plugs keep burning due to the misfire. I’ve talked to my mechanic and he said there are multiple vehicles having same issue. Honda should open a recall and fix this ASAP.

Per Honda dealership technician: oil seeping into cylinders 1-3 when VCM system is on. Spark plugs are fouled up and causing misfires on engine. Scoring on cylinder 2 also likely due to VCM issues requires engine block replacement. The above engine issues are the reason for blinking check engine light, traction control disabled light, and forward collision warning disabled light to all be on. These ultimately are occasionally causing stuttering/shuddering of the engine during acceleration. While trying to accelerate on an freeway on-ramp the engine appeared to hit a rev limiter at ~4,000 RPMs and wouldn't up-shift to the next gear while doing ~45 MPH with other vehicles behind us also trying to accelerate. Had to let off the gas and gently accelerate over a longer distance/time keeping RPMs low and was able to accelerate to 75 MPH speed limit after merging onto freeway. Vehicle is otherwise in good condition and has maintenance attended to regularly.

On September 28, 2023, the check engine light came on while on the freeway. I pulled over at the closest exit and checked the manual and did as instructed and let the engine cool down. Upon it cooling, I started the car back up and the light did not come back on. Being close to where I was going, I proceeded to my destination. The following week I scheduled an appointment with the dealership to have it looked at. This was scheduled for October 18, 2023. On October 15, while stopped at a stop light, the car started to make banging loud noises and when the light turned green and I stepped on the gas, the check engine light came on again and the car sounded so rough I immediately pulled over and called a tow truck and had it towed to the dealership. This was on a busy 45 mph road, causing a hazard to just have my car fail like that. The dealership discovered that three of the six piston rings had failed, causing oil to leak out and corrode the spark plugs prematurely. I had the repairs completed and have contacted Honda Corporate to inform them of the issue and reimburse me, of which they did not. This has been an issue is previous models with recalls, and this continues to be a safety issue that Honda needs to correct.

I have had the same issue now twice with my vehicle. The first repair was done in 2020 and covered by Honda under warranty. They repaired Cylinder Block-Piston Rings misfiring. It was I believe about a $3,500 repair when covered under warranty. I now have the same thing happening again. I took it in to Honda for diagnostic test and and i have the need for immediate attention to repair-end of October, 2023. I also already had labor service April 11, 2023 and had a code PO303 cylinder#3 misfire, swapped plugs 3 & 5. Spark plugs causing issues. Again the beginning of October I had to take my vehicle in AGAIN for spark plugs and misfiring. Had the spark plugs changed twice this year. And already had a MAJOR repair for the piston rings on this same vehicle. This should not be happening AGAIN. When my car needed the plugs changed in October 2023 my check engine light came on and was flashing and driving rough. I had to towed to shop to get looked at.

The van has approx 83,000 miles and always maintained by Allen Honda in College Station Texas, and all scheduled maintenace has been implemented. For sometime now the van judders/vibrates during acceleration from a full stop condition till about above 30-35 MPH. The condition has gotten progressively more noticeable. There are no caution / advisory lights on the instrument panel. I took the van to Auto Zone to see what fault codes be read. The Auto Zone scanner revealed codes 83-1 and 61-1 related to Anti-Lock Brake System. But after reading 26 pages of this site I'm inclined to believe that the cause is related to the power train.

I am not sure what is going on but my key phob no longer will unlock my van or lock it. My car seems to loose power sometimes but more than normal it almost as if it is going to die as I an driving it. This has been ongoing since June 2023.

The exact issue was reported for 2011-13 Honda OdesseY Models, All TRIMS and HONDA was issued a extended warranty for those vehicles and Honda is denying the same warranty extension for 2016 Honda Odessey models. The details are published in Service Bulletin 13-081 , which says

This is a problem with the car’s variable cylinder management. It causes the spark plug to degrade, the engine cylinders fill with oil and damages the piston rings. This has happened to me on my 2016 Honda Odyssey which has less then 50,000 miles. When the engine cylinders misfire while driving, it causes sudden loss of power and an inability to drive. The repairs are very costly. There was a class action lawsuit aimed at this very problem in the 2008-2013 Honda Odyssey - Honda settled the lawsuit March of 2014. Honda extended the warranty and would fix the issue on the existing 2008-2013 Honda Odysseys. Honda has not fixed the problem and they continue to sell vehicles with this known issue and not disclosing it to their customers. It remains a safety issue while driving.

This is a problem with the car’s variable cylinder management. It causes the spark plug to degrade, the engine cylinders fill with oil and damages the piston rings. This has happened to me twice now, where the engine cylinders misfire while driving, causing sudden loss of control of the vehicle and an inability to drive. The repairs are very costly. There was a class action lawsuit aimed at this very problem in 2013, but Honda has not fixed the problem and it remains a safety issue while driving.

Control Module system failure escalated to an extent where the vehicle will not turn off after pushing the off button and cause flickering while the vehicle is in motion. Part #38329-TK8-A01 is currently in the shop due to part replacement on critical backorder. The vehicle has and can shut off during transit making it a hazard on the road. The vehicle had to be disconnected from the battery to be able to shut off the vehicle, but the on-road transit shut-off was not reproduced. Honda Dealership has inspected the part, and they're unable to correct or resolve the part without a complete replacement. Issues before the incident: Lights would flicker, a clicking noise would be heard from under the hood, car alarm would go off with nothing attempting or touching the vehicle.

The contact owns a 2016 Honda Odyssey. The contact stated that while driving at an undisclosed speed, there was a misfire coming from the engine, with the check engine warning light illuminated. The contact stated that shortly afterwards, the vehicle vibrated abnormally and hesitated while accelerating. The vehicle was taken to an independent mechanic to be diagnosed, and the contact was informed that the ignition coils and spark plugs were faulty and needed to be replaced. However, the failure returned a year later, with a misfire coming from the engine while driving, with the check engine warning light illuminated. The vehicle was taken to an independent mechanic to be diagnosed, and the contact was informed that the ignition coils and spark plugs were faulty and needed to be replaced. The vehicle was repaired; however, the failure reoccurred months later. This vehicle was taken to a Honda dealer to be diagnosed, and the contact was informed that the cylinder rings were faulty and needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 85,000.

I was driving down a city road and engine light came on as well as traction control light. The car began shaking and lost power slowing down while I had 4 kids in the van. I took it to a Honda dealer the next morning and they said that oil is leaking past the piston rings and fouling the #3 spark plug causing misfiring. They suggested a replacement of the engine as they indicated a head job may not fix the issue. The engine light had come on once before accompanied by the loss of power and shaking about 4-5 months prior but the issue was not found at that time by the Honda service shop as when I brought it in the check engine light was gone. But I I had all the spark plugs replaced as I was at approximately 106,000 miles at that time. Now I'm at 109,000 and the issue returned as noted above, but much worse. Basically I'm forced to sell the van as it's unsafe to drive and too costly to repair.

At highway speed (70mph), our van suddenly lost acceleration while the engine began to shudder while the check engine light came on. I had to maneuver to the shoulder of the highway and turn off the vehicle. Upon trying to restart the vehicle, both the check engine and Forward Collision Warning failure messages appeared. The vehicle required towing by AAA to a repair garage. The garage reported that the malfunction code was "Misfire Cylinder #3". Cylinder #3 and spark plug were removed and cleaned due to deposits from oil entering the engine.

On December 7, 2022, while driving my family of six, my 2016 Honda Odyssey EX-L with 83,000 miles triggered a flashing check engine light and lost most acceleration while on a busy highway. I was able to limp the vehicle to a repair shop who identified that the van appeared to be burning oil. Oil was changed in its entirety and was advised to check oil frequently. On February 5, 2023, again while driving my family on a major highway, the flashing check engine light was triggered along with the antilock braking system, lane departure warning and front collision warning, along with a display message of front ‘FCW system failed’. Upon checking the oil level, which was fine, I again slowly drove the van to a mechanic. The mechanic removed all spark plugs and checked the coils. Spark plugs 1-3 all had oil on them causing them to foul and the coil on piston 3 was destroyed. This very same issue was the cause of a class action lawsuit for which Honda issued recalls and extended warranties for vehicles ranging from 2008 - 2013, yes the issue continued in Honda vehicles such as mine until 2018. I am now forced to pay ~$4500 for a repair that should have been covered under a voluntary recall. Oil in the spark plugs is a known fire hazard and this willful neglect by Honda placed the lives of myself and my family of six at risk. Even more shameful is that multiple Honda service departments in my area were contacted as a result of this faulty piston issue and each independently stated that this is a known issue in Honda models up through 2017. If Honda service centers can attest to this, and they are the face of Honda America to consumers, yet have taken no responsible actions to date to offer consideration for their loyal patrons, then the government has a duty to protect consumers through a mandatory recall to address this prevalent safety issue. Do so now before an engine fire caused by gross negligence takes the life or lives of innocent children.

Passenger sliding door gave 3 beeps and refused to close upon inspecting the door to manually close the door it fell of the top and side rail track.

While driving the vehicle the engine began to bog down and the check engine light came on.

The contact owns a 2016 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the vehicle stalled. The check engine and ABS warning lights illuminated. In addition, the contact stated that when the fuel tank was not full, the vehicle would not accelerate as intended while depressing the accelerator pedal. The vehicle was taken to a local Auto Zone where it was scanned and diagnosed with a code P0848. The contact stated that the cylinders and spark plugs were previously replaced by an independent mechanic. An appointment with the dealer was scheduled to inspect the vehicle further. The manufacturer was not made aware of the failure. The failure mileage was approximately 133,000.

Car shutters or jolt when start or Accelerate between 20-35 mph .

Check engine light flashing towed to the dealership and was inform engine code p0301 misfire cylinder 1 had to replace piston rings on that entire side of the head. Now getting engine cod p3400 vps bank 1 within 1200 miles of the first issue. Engine hesitation between 40 and 55 mph and rpm is around 1500 RPM.

The engine misfired which caused the vehicle to lose power in traffic endangering the people in my vehicle and in the other vehicles on the road around me. The check engine light began flashing and I had the vehicle towed to the dealership to be inspected. Upon inspection I was informed by the dealership that this was a known problem in Honda Odysseys and that the VCM system causes the piston rings to go bad prematurely which causes unburnt oil to foul the spark plug and cause the car to misfire and lose power. Apparently a class action lawsuit about this issue led to Honda extending the warranty and covering the repairs on Oddyseys made between 2005-2013, but the issue was never corrected and the 2016 model is not covered. The cost of the repair was $3830.

The contact owns a 2016 Honda Odyssey. The contact stated while driving at 35 MPH with his daughter sitting in the rear driver's side seat, the rear driver's side seat reclined unintendedly. The contact stated that the seat was moving back forth. The contact that he had not been able to readjust the seat though it was manual seat. The dealer and the manufacturer were notified of the failure and informed the contact that the vehicle could not be repaired under Honda Technical Service Bulletin Number:18-026 as the VIN was not included. The vehicle was not diagnosed or repaired. The failure mileage was approximately 80,000

Less than 4 months after having a thorough engine inspection, the engine developed an oil leak which caused piston rings 1-3 to fail. The car immediately began shaking, flashing caution lights, flashing a notice the FCW System failed and jolting while in idle.

At highway speeds (50-65mph), the transmission would jutter/shudder when trying to either accelerate or decelerate from constant speed. The issue incrementally got worse and got to the point where the van was undrivable on the highway. I found the service bulletin 14-043 and brought the van into my Honda Dealer with a copy of the service bulletin. They test drove my vehicle and agreed this was the issue. The software was updated and ATF was flushed at no cost.

While driving in October 2022, my car suddenly had the check engine light begin flashing. My car immediately began to lose power and would barely accelerate. Multiple other dash lights then started flashing. I called the Honda dealership who told me to drive it there. I barely made it to the dealership (having to drive slowly, not being able to accelerate, and not knowing if the car was suddenly going to die). The Honda dealership diagnosed it as a failure of the piston rings leading to a catastrophic engine failure. These piston rings needed to be replaced, which could only be done with an entire engine rebuild. This cost approximately $5000. I got the car back and then the next day was driving on a major interstate traveling 70mph. All of the sudden the car completely shut down. It was so extremely dangerous. I had to pull over to the side of the road and wait for a tow truck. The town truck took the car back to the Honda dealer, which diagnosed a timing belt failure. The timing belt and water pump had to be replaced, costing an additional $1-2k. Then in August 2023 the alternator has now failed. This caused the car to again suddenly die while driving it.

The transmission shifts hard in first and second gear, It happens at different time sometimes when it is cold and a lot of times when it is at driving temp. Yes it is available for inspection upon request. This has been happening for over a year. We could be rear ended because it happens after a stop at a red light or stop sign, which could cause someone to hit me in the rear and could injure both us and them. It bucks so bad that it hurts me as a driver and my passengers. There is a class action law suit in California for this problem. No warning lamps or messages or other symptoms of problem prior to the failure. It just happens and every service center says it just happens which is not right.

The contact owns a 2016 Honda Odyssey. The contact stated while driving 45 MPH, the vehicle started shuddering and was running rough. The check engine warning light and the traction control warning light were illuminated. The contact stated that the failure had been recurring while driving. The vehicle was taken to an independent mechanic, where it was diagnosed that there was oil intrusion on the spark plugs, which caused a misfire. The mechanic replaced the spark plugs and added a fuel additive to the vehicle; however, the failure persisted. The dealer was not notified of the failure. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the dealer for diagnostic testing. The failure mileage was approximately 68,000.

Engine light blinking, rough idle, and code reading gives "cylinder 3 misfire". I pull the spark plug out and found it's foul, covered with oil and black stuff. Searched the forums and found it's probably a common problem caused by Honda VCM.

UNKNOWN I was urged by a Honda World representative to give my account. My vehicle has intermittently flashed forward collision warning failure/lane departure warning and the check engine light. The issue has been reported to the dealership and they've acknowledged that it seems to be a well-known issue with this particular make/model/year vehicle, due to a faulty part. In order to issue a recall there need to be reports. So here you go.

While accelerating, especially up an incline, the vehicle (2016 Honda Odyssey) shudders as if the transmission is repeatedly slipping. Instead of rising smoothly, the tachometer bounces up and down as it is increasing. If you plotted the rpms as a function of time, it would look something like a "sawtooth" pattern. The issue seems to go away once a cruising speed is reached. This jerking makes me worried that the transmission could fail at any time and result in an emergency situation and/or accident. The vehicle is currently at the dealership but they seem uncertain as to what will fix the issue. They want to start with a $600 transmission flush. Then if that doesn't fix it, they want an additional transmission flush. And if that still doesn't fix the issue, then they want to try replacing the torque converter. This appears to be an issue known to Honda but of which owners have not been made aware. It appears to be a flaw in Honda's software resulting in an inability to maintain the transmission fluid in an safe and appropriate range. Honda should be required to notify all owners and issue a recall to fix this issue.

Constant cylinder misfire

The contact owns a 2016 Honda Odyssey. The contact parked the vehicle, turned the engine off, and removed the ignition key from the ignition but failed to switch the shifter from the drive position. While attempting to exit, the vehicle rolled backward down the driveway and crashed into the mailbox. During the incident, the contact attempted to reenter the vehicle to prevent the rollaway and was pushed to the ground and dragged down the driveway causing multiple injuries which included a back injury, leg contusions, ankle injuries, and a lacerated left leg which required medical treatment. The cause of the failure was not yet determined. The manufacturer was notified of the incident. The local dealer was not yet contacted. The contact was also concerned that the ignition key was able to be removed from the ignition switch although the shifter was still in the drive position. The failure mileage was 101,000.

The contact owns a 2016 Honda Odyssey. The contact stated that while driving at various speeds, the vehicle would hesitate upon depression of the accelerator pedal as several warning lights would appear on the instrument panel. The contact had taken the vehicle to an independent mechanic on numerous occasions where the spark plug have been replaced each time. The mechanic informed her that the vehicle's variable cylinders were the cause of the failure which had resulted in the spark plugs wearing out at a rapid pace. The dealer nor the manufacturer had been notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 80,000. The VIN was not available.

One of the cylinder valves get stuck open. Happened several times within a year. Car looses power and the engine runs rough due to cylinder misfire. Honda says they would need to replace all cylinders. Problem apparently happened in older models and seen other complaints for same issue in like make and model year.

May 2, 2022 - While driving home one evening, my check engine light came on, flashing. I was able to get into my neighborhood and once I got on my street, the front of the car started shaking violently. I made it into my driveway. This was very distressing and frightening. Scheduled a tow through USAA mobile app for next morning to be taken to Honda. There is way more detail - can't paste all here. July 9, 2022 - At approx 10AM, we left our vacation rental and started the drive home to MS. My check engine light came on and started flashing again. I made it to the middle of the island and met my husband. I was visibly shaken because I knew this was a serious issue. I had three kids and a 175lb dog in my van, along with half of our belongings. If I had gone a few miles or two more, I would have been stranded on a four-mile bridge. I had driven my car frequently while we were on the island (2 weeks) and there were no issues - until this day. - Again, I have WAY more information on this - cannot paste it all here.