Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2012 Honda Odyssey owners, lightly cleaned up (personal details are redacted by NHTSA).
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.
The contact owns a 2012 Honda Odyssey. The contact stated that while driving at various speeds, the check engine warning light would suddenly illuminate and the vehicle would not properly accelerate and would drive very rough. The vehicle was taken to an independent mechanic who diagnosed that cylinder number one was faulty. The vehicle was taken to the local dealer who diagnosed that the oil pressure switches were faulty and needed to be replaced. The oil pressure switches were replaced; however, failure reoccurred. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 78,000.
The contact owns a 2012 Honda Odyssey. The contact stated while driving 35-45 mph, the check engine warning light illuminated. The contact stated that there was blue smoke coming out of the exhaust pipe and the vehicle was shuddering. The contact continued driving the vehicle to her residence. The vehicle was towed to the dealer who diagnosed that the engine needed to be replaced. The manufacturer was made aware of the failure and advised the contact they could not provide any assistance as she was the second vehicle owner. The vehicle was not repaired. The approximate failure mileage was 141,000.
The contact owns a 2012 Honda Odyssey. The contact stated that the check engine warning light was illuminated on the instrument panel. The vehicle was taken to the dealer for diagnostic testing. The dealer stated that oil was leaking onto the spark plugs. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 87,000.
The Variable Cylinder Management (VCM) System continues to burn my spark plugs on the rear of the engine where the VCM activates and deactivates. Spark plugs and cylinder fills with oil deposits when cylinders are deactivated. Also burning in excess of one quart of oil per 1,000 miles. Not safe to continue to drive because engine failure could cause other systems like, power brakes, ABS, power steering wheel, etc to fail. Also unsafe unreliable to have my family to take long trips where road side assistance might not be available due to no cell telephone signal in certain areas of Texas isolated roads. Thank understand Honda has had recalls on these engines and VCM systems in the past but their fixes don't appear to work. I am one of many Honda owners that are left out to spend thousands of dollars in new engines because of original and extended warranties expiring. …
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). …
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.
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
Misfire in cylinder 1 Caused van to lose power on freeway almost causing an accident. From 2011-2013 there was a settlement that gave an 8 year extended warranty, but why is it only 8 years when not everyone's driving is the same? My van was brought to the Honda dealer Check engine light came on, then it flashes
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.
Engine complaints in other Odyssey years
Frequently asked questions
How common are engine problems on the 2012 Honda Odyssey?
NHTSA has 45 complaints about the engine & cooling of the 2012 Honda Odyssey, 18% of the model year's 245 complaints. The component named most often is exhaust system › emission control (1 mentions).
Is there a recall for 2012 Honda Odyssey engine problems?
No. NHTSA lists no engine & cooling recall for the 2012 Honda Odyssey, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2012 Honda Odyssey engine problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 32% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 3 fires and 4 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.