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.

- Chesapeake, VA, USA

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.

- Salem, OR, USA

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.

- Durham, NC, USA

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.

- Apex, NC, USA

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.

- Saint Paul, MN, USA

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

- Cary, NC, USA

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.

- Edwardsville, IL, USA

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.

- Baton Rouge, LA, USA

While driving my family on a major highway, the flashing check engine light was triggered 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 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 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.

- Severn, MD, USA

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.

- Mason, OH, USA

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.

- Owings, MD, USA

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

- Portsmouth, OH, USA

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.

- Wernersville, PA, USA

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.

- Louisville, KY, USA

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.

- Alexandria, VA, USA

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.

- Brookfield, WI, USA

Constant cylinder misfire

- Philadelphia, PA, USA

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.

- Hattiesburg, MS, USA

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.

- Winterville , GA, USA

Within the last two years, spark plug number two has been faulty 3 different times. This causes driving issues while on the road, the car will not accelerate.

- Laporte, IN, USA