2016 Honda Odyssey Engine

Piston ring failure at 90K miles. Mechanic says repair will cost over $10K. Seems to be a known issue with this year/model based on internet searches.

engine in this vehicle keeps having a misfire in Cylinder 2 (when looking at engine in car, it is the back side, 2nd from the left) caused by eco mode per honda techs. The piston ring needs replaced per tech and car is 2 model years outside the warranty for this issue that is still going on. its a common issue and is still occurring even is newer models according to the 2 local dealerships.

Pistons Ring premature wear . Car only have 100000 miles on odometer but during 100000 mile service. Honda dealer find abnormal wear of piston ring due to which they suspect leak in combustion chamber which can cause further issue . I bought the Odyssey to last longer , did not expect to do major repairs on only 100k miles and unfortunately that's not the case. Now, I need to make a decision. Pay the 4k get it fixed or keep it as is.

We are reporting a safety concern on the Honda Odyssey that Honda Corporation is aware of on the 2016 Honda Odyssey. They have a defect in the Piston Rings on the Engine. This engine design on the 2016 engine is the same where a recall was called on older versions of the Odyssey and other Honda vehicles. They have not included the 2016 as they say that they haven't had many cases of this version having the problem. With a quick search of the web you will find many people who are reporting or talking about piston ring issues, misfire and spark plug problems on the 2016 Odyssey. They are then asking customers to spend between $3 and $5 to fix this problem in the engine. Which is a known engineering defect! I have kept up with my oil changes and had a well maintained vehicle rating on CarFax. We are reporting the problem to you as when this happened it was extremely dangerous to drive the van. We were stopped at a red light just stopped and the engine was idling when all of a sudden the van started shaking. No sign of a problem prior to this happening. Then we looked and no lights were on but as soon as we started to drive the check engine light came on. We drove the van the couple of miles home as it was a Sunday and the engine had no pick up and go. Pulling into traffic or turning was a danger. This is a danger to not only us in the van but others around us who are not aware of a problem. We drove the van to the dealership on Monday morning. They said that it had caused a bad spark plug and they could clean the area and we may get 5000 to 20000 more miles but that recommended that we would some point need to spend the $4600 to fix the piston rings as well. We did the spark plug repair and they returned the van to us. It still seemed sluggish but we quickly realized that it was having major problems. This is a danger to people in the vans as well as others on the road. Honda should be required to cover the cost of piston ring issues on all years.

In January 2024 engine began misfiring, towed to shop, all spark plugs replaced due to fouling by oil. June 2024 issue began again, towed to shop, spark plug 1 found to be fouled by oil. Shop states this issue is likely caused by piston ring malfunction known to be an issue in earlier year Honda Odysseys. Honda states issue was fixed in 2014 and newer models, yet many complaints found online for 2016 model.

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 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.

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.

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.

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.

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.

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.

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.

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.

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 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.

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.

At 59,000 miles my wife was driving down the road and immediately the van’s engine lost the majority of its power and began shaking tremendously. My wife and kids were able to get off the road but had it been on a freeway it would have been extremely dangerous. The Honda technician conveyed to me that 3 cylinder rings busted. How do 3 cylinder rings bust simultaneously on a well maintained HONDA engine at 59k miles?? They informed me of the Variable Cylinder Management system that shuts down 3 cylinders during certain times. If I can’t trust my family to drive safely down the road in a well maintained HONDA engine with 59k miles, I’m not sure that this system is safe. In addition the repair was out of warranty and cost $3,000! I believe there should be a recall on this system!

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.

Constant cylinder misfire

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.

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.

The contact owns a 2016 Honda Odyssey. The contact stated that while driving at various speeds the vehicle would shake from side to side and vibrate and the odor of burning oil was present. The vehicle was towed to the local dealer where the spark plugs were replaced. The failure later reoccurred and the vehicle was taken to the local dealer who diagnosed that the piston rings were faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 52,579.

honda has recall/extended warranty on 6cyl vehicles dating back as far as 2008, for cylinder misfires caused by bad piston rings. Recently had to have this done on my 2016 vehicle, but it wasn't covered under any recall or warranty. this is clearly an ongoing problem, and Honda should be paying for these repairs.

The contact owns a 2016 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the vehicle started to shake and vibrate and the check engine warning light flashed on and off before the vehicle decelerated and would not properly accelerate while depressing the accelerator pedal. The vehicle was later towed to the local dealer who diagnosed that the engine pistons had become out of alignment causing oil to leak onto the spark plugs. The vehicle was not yet repaired. The manufacturer was contacted but no assistance was offered. The failure mileage was 76,650.