What 241 owners told NHTSA about the 2012 Honda Odyssey

piston rings wore out prematurely on our 2012 honda odyssey. this was caused by the vcm system. its a known issue on hondas. it only had 88,600 miles at the time. we were driving our 2012 honda odyssey in december 2023. the check engine light began to flash. it starting running rough. we had it towed to a honda dealer for inspection. they pulled codes p303 and p304. they said the rings were worn and spark plugs fouled. they said this is a common issue because of the vcm. they peformed a rering job and with all parts and labor the cost came to $4000. we are very disgusted that this issue was already known by honda and they failed to place the vehicle on recall or wave the repair cost. they had a previous recall for this issue, but they say it was for a limited time frame. my mother only drives less than 10k miles a year, so the issue wouldnt have happened before 2016, as the miles on her van were still very low. we are issueing a complaint against honda for this issue. we are asking for reimbursement for the repair for the piston ring job which was $4000 while we had the vehicle in for this repair, we were also informed of other issues with the van, and we went ahead with those repairs as well, which brought our repair bill total to over $6419, which is also shown on the same receipt.

NHTSA ODI 11738298

The 2012 Honda odyssey alternator caught on fire after the battery light came on which luckily I, the driver, was able to put out. The next day I towed the vehicle to Boyd Honda Auto in Oxford, NC, where they confirmed with diagnostic that the alternator was overworking and that there was a seeping spool valve. This seeping spool valve is a manufacturer’s defect.

NHTSA ODI 11735013

Odometer Fraud. The contact purchased a 2012 Honda Odyssey. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. The vehicle mileage was 117,000 at the time of purchase; however, the title listed the mileage at 14,580. The Department of Motor Vehicle reported that the actual mileage as 214,000.

NHTSA ODI 11735117

On Wednesday night, the battery light initially came on and after a few minutes the van had this burning smell so I pulled over and the alternator was on fire. I put it out with several bottles of water from papa John’s. Today, at Boyd Honda in Oxford said in the diagnosis that there was a sweeping spool valve that had leaked which must have caused the alternator to blaze because this is a manufacturer’s defect from Honda.

NHTSA ODI 11733644

Odometer Fraud. The contact purchased a 2012 Honda Odyssey. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 80,000. It was later discovered, after checking the Carfax report that the mileage was 285,000.

NHTSA ODI 11703691

Vcm problems burn oil and misfire code

NHTSA ODI 11687498

For several years now, we have misfire issue or code P0304. We continue to change spark plugs cylinders. Both usually last a year or so then they need replaced again. I research the problem, no recall or the like. I did see his report on-line, wondering if it applies to us, Warranty Extension: MIL Comes On with DTCs P0301 thru P0304. Any help would be greatly appreciated.

NHTSA ODI 11684172

Dear NHTSA Advisor, Thank you for regarding my request for warranty coverage for the critical misfire and overheating defect with my 2012 Odyssey Honda Engine 3.5L Engine. Odyssey, as described in Honda’s Service Technical Bulletin 13-081. I must reiterate the severity of my situation: the part required for repair is quoted at $7,500.00—and that does not include labor. This amount far exceeds the current market value of my vehicle, effectively making it impossible to afford repairs without Honda’s intervention, it’s aSafety Defect & Known Manufacturer Issue. The misfiring and overheating problems represent major safety risks for my family and anyone who operates the vehicle. This is not routine maintenance, but a substantial defect that Honda has addressed in its own technical bulletin. I have adhered diligently to Honda’s maintenance schedule throughout my ownership. Attached to this correspondence is a PDF containing the complete Service Technical Bulletin 13-081. I am prepared to provide any additional documentation upon request. WARRANTY EXTENSION: MIL COMES ON WITH DTCS P0301 THRU P0304 TECHNICAL SERVICE BULLETIN Reference Numbers): 13-081, Date of Issue: October 08, 2020 HONDA: 2011-13 Odyssey Superceded Bulletin(s): 13-081, Date of Issue: June 18, 2019 Aug 5, 2025 License: Odometer: NOTE: Supersedes 13-081, dated June 18, 2019, to revise the information below. AFFECTED VEHICLES AFFECTED VEHICLES Year Model Trim Level VIN Range 2011-13 Odyssey ALL Check the iN VIN status for eligibility. REVISION SUMMARY Under CUSTOMER NOTIFICATION, outdated information was removed. CORRECTIVE ACTION 2011 Models: Complete diagnosis procedure and if necessary, update PCM software (Procedure A) , replace affected spark plugs then clean pistons and replace the piston rings (Procedure B) • 2012-13 Models: Complete diagnosis procedure, replace affected spark plugs then clean the pistons and replace the pistons rings (Procedure B). No need for software update as 2012-13

NHTSA ODI 11683289

The contact owns a 2012 Honda Odyssey equipped with Cooper Tires, Tire Line: CS5 Grand Touring, Tire Size: P235/65/R17, DOT Number: (N/A). The contact stated while driving 70 MPH, the vehicle started to vibrate abnormally. The driver was able to pull over safely and became aware of a blowout of the front passenger’s side tire. There were no warning lights illuminated. The contact stated that while driving 70 MPH, there was an abnormal vibration in the steering wheel. The vehicle was taken to a tire center where it was determined that the failure was linked to a busted tire core. The damaged tire and driver's side rear tire were replaced. The contact stated that while continuing to drive, the steering wheel and the vehicle continued to vibrate. The vehicle was taken to a tire center, where it was determined that the driver's side front tire had a shifted radial belt, and a bulge was detected. The tire was replaced. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The vehicle failure mileage was approximately 79,694. The tire mileage was approximately 20,000.

NHTSA ODI 11665333

Odometer Fraud. The contact purchased a 2012 Honda Odyssey. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 130,000, and at the time of registration, it was discovered that the mileage was 230,000. Local authorities had been notified.

NHTSA ODI 11655191

vehicle loses acceleration power intermittently. No response when pressing accelerator or when speeding up with cruise control. Pressing the gas harder does not help but the vehicle starts working normally a few seconds later. Dangerous on busy roads. I don't think it is a weak fuel pump because it accelerated quickly after an event

NHTSA ODI 11641339

The front valve cover is exposed to extreme temperatures from the catalytic converter mounted next to it. There is nothing to protect the rubber components inside from the catalytic converter's excessive heat which is causing them to fail. The steel components inside the cylinder (e.g., the seal ring) are insulated by these rubber components. When these rubber insulators fail, the steel components are exposed and make contact with the aluminum valve cover resulting in the galvanic corrosion of the aluminum. The most common result I have seen is the deformation of the area where the seal ring is seated (along with holes and cracks). Some people have also suggested possible defects in the casting of the aluminum as a contributing factor (the aluminum is also very thin in that area). Some have suggested the possibility of the uninsulated spark plug arcing, but it seems unlikely to generate enough heat to compromise the aluminum's integrity. The way people have described how the aluminum crumbles seems more indicative of corrosion. There are countless testimonies online of similar defects in Odysseys, Pilots, Accords, and Crosstours with the same engine. I have included a photograph of my damaged valve cover and those of others I have found online.

NHTSA ODI 11584638

While driving on Thursday, 18 April 2024, the CHECK CHARGE SYSTEM alert and warning light came on in my 2012 Odyssey. I was able to get to a garage that was a few miles away, but the electrical system gave out about 1/4 mile from the garage. I was able to shift into neutral and coast into the parking lot. The dash lights were all off and the electrical system had stopped working. When I tried to exit the vehicle, I could not open the driver door. The lock was frozen in place and wouldn’t budge. I was able to pull the handle, but it did not unlatch or open the door. The power lock buttons did not work either. I tried all the other doors and it was the same situation. I was literally trapped inside my minivan. Someone tried opening it from the outside and that did not work as the doors had auto locked due to driving. The hood release mechanism worked fine, so I was able to pop the hood and a the mechanic jump started my battery and I was then able to unlock and open my car door. This is a serious safety concern as it suggests that an electric system shutdown due to fire, immersion in water, or other emergency situation would render any occupants stuck inside the vehicle. The mechanic evaluated the situation and said my alternator was broken and needed to be replaced. He did that successfully and I was back on the road in about 2 hours. It’s been running fine since then. I think this is a serious issue that Honda needs to address.

NHTSA ODI 11584162

A few weeks ago a cable for the sliding door on the passenger side snapped. We were able to use it manually until this weekend when the whole door fell right off when sliding it closed.

NHTSA ODI 11579282

Cable on passenger side sliding door snapped and door shut without latching on the arm of the person getting in.

NHTSA ODI 11572117

Drivers side heated seat switch turns on then off shortly after.

NHTSA ODI 11566101

The contact owns a 2012 Honda Odyssey. The contact stated while driving at various speeds, the vehicle lost motive power inadvertently in the middle of the roadway. There was no warning light illuminated. The contact was unable to veer to the side of the roadway. The contact stated that he shifted into park (P) and was able to restart the vehicle. The contact stated that the failure had been occurring approximately twice per day while driving. The dealer was not notified of the failure. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 23V751000 (Engine and Engine Cooling). The manufacturer was notified of the failure, and a case was filed. The failure mileage was approximately 100,000.

NHTSA ODI 11556273

The contact owns a 2012 Honda Odyssey. The contact stated while driving 30 MPH, several unknown warning lights were illuminated on the instrument panel. The vehicle was taken to an independent mechanic, who diagnosed a failure with the alternator. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 132,000.

NHTSA ODI 11548094

Prior to the problem, the radio cut off, various lights (battery, abs, etc) lit up and Check System warning light appeared. The car remained running for approximately 10 miles although stepping on the accelerator did not always result in increased speed. Touching the brake caused the RPM gauge & speedometer to immediately drop to zero and removing my foot from the brake immediately resulted in both gauges resuming correct reading. Eventually, the car ceased to function and I removed the key. Then I tried to exit the vehicle. None of the doors would open and I remained in the car until my wife arrived with a spare set of keys which opened the door. A mechanic later determined the alternator needed replacement. Had I not had a mobile phone to call someone, I might still be there. Had the weather been either extremely hot or cold the consequences could have been life threatening

NHTSA ODI 11546201

Misfiring, I have had to change the spark plugs and coils multiple times. I have contact Honda in Green Bay wi and Appleton wi, they have told me the recall has expired. We just bought this car this year from a none Honda dealership used. Had this problems days after getting it.

NHTSA ODI 11526788

The contact owns a 2012 Honda Odyssey. The contact stated that on several occasions while driving at various speeds, the vehicle was jerking. The check emissions and check VSA (Vehicle Stability Assist) warning lights illuminated intermittently. The vehicle was taken to a local dealer however, the failure could not be duplicated. The contact stated that the failure persisted. The vehicle was taken back to the dealer, where it was diagnosed that the piston rings needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 85,000.

NHTSA ODI 11521604

Paint is falling off

NHTSA ODI 11517286

I was driving down the highway and my sunroof exploded.

NHTSA ODI 11516677

The power door was not shutting correctly. A 5 year old was getting into the car when the door decided to shut. It hit her, and then reopened. When it reopened, the door went off the tracks and fell on my husband. Now the door is completely off the tracks and the body of the car is messed up.

NHTSA ODI 11505734

Mastercraft Stratus As size 235/65R17 While driving on highway tire pressure light illuminated then immediately proceeded to tire shop to check tire . Then found left rear tire had a ball and saw the sidewall bead protruding. I had a shop dismount the tire and they mentioned they have seen this before where the inside of the bead started to come apart. He saw the brand and mentioned it seems like they haven’t fixed the issue.

NHTSA ODI 11501722