2018 Honda Odyssey: misfire or rough idle

Filed Mar 20, 2026 · Fuel system · VA

My Odyssey began to shudder and misfire. Luckily, I was in a parking lot when it happened. It stopped running. Several attempts to restart were unsuccessful. Once when it did start, it was missing and would barely move. After about 15 minutes, I was able to get it started and get home (a little over 2 miles). I installed my code checker to find the problem. I initially had 22 codes - including P0301-P0306, P0300 and P0087. I waited a while and re-ran the test. The P0087 continued to show. I did not attempt to drive it anymore until the next day, when I took it to Canady & Branch (Auto Repair). They checked for codes and also had the P0087 code. They called and informed me of the issue and indicated that it involves the fuel pump. They also indicated that there were recalls for the Honda Odyssey for the fuel system:fuel pump. I contacted Priority Honda to determine if this would be covered under a recall. I was told that the recall did not involve my Odyssey. I needed my vehicle, so I had Canady & Branch make the necessary repair ($874.42 - the diagnostic was an additional $77). I spoke to Honda USA today and was informed that they do not cover 3rd party work and reiterated that my vehicle was not on the recall list. I was told that IT HAD BEEN on the list but was removed in March of 2024.

Filed Apr 9, 2025 · Driver assistance, Electrical · RI

The tailgate module has been fixed three times by Honda, along with the tailgate being resealed by honda, however, the car continues to leak water through a seal in the drivers side upper rarea. The electrical components and fuse boxes have been full of water causing the vehicle to turn on automatically, have every light illuminated, tailgate open on its own, tailgate won’t close, no turn signals, no power to infotainment center, infotainment permanently displaying back up camera while in drive mode. The tailgate has been resealed by Honda (balise Honda of West Warwick) in March of 2024 and vehicle will be back there this week due to same issue. Battery needed replaced due to all the electronics misfiring and automatically turning on- car has left my family, my children stranded multiple times due to electrical issues misfiring and depleting battery.

Filed Mar 27, 2025 · Engine · 126,000 miles · TX

The contact owns a 2018 Honda Odyssey. The contact stated that while driving at 50 MPH on the highway, the vehicle went into LIMP Mode. The vehicle failed to accelerate above 40 MPH. There was an abnormal clicking sound coming from the engine. The contact restarted the vehicle. The engine, steering assist, and battery warning lights became illuminated. The low engine oil message was displayed. The contact checked the oil level, and the oil was sufficient. The vehicle was towed to an independent mechanic who determined that the long block needed to be removed and replaced. There was metal in the oil. The mechanic recommended an engine replacement. The vehicle was not repaired. The local dealer was not contacted. The contact stated that previously, while driving at undisclosed speeds, there was a misfire coming from the engine. The engine had overheated. The vehicle was taken to a local dealer, who was unable to determine the cause of the failure. The vehicle was taken to another local dealer, Hoehn Honda Carlsbad (5454 Paseo Del Norte, Carlsbad, CA 92008,) and an undisclosed repair was performed. The manufacturer was not contacted. The failure mileage was approximately 126,000.

Filed Feb 13, 2024 · Engine · MN

My wife was driving our 2018 Honda Odyssey when there was acute diminished and very unstable engine power on 7/10/2023. She heard a "knocking" noise like metal-on-metal and pushing the accelerator resulted in very uneven increase in speed - in fact, it would not go above 30mph. She immediately took the van to our local car dealership, but it was very difficult to drive the 1-2 miles it took for her to get there. Her safety was put at risk because the engine did not provide reliable power to drive after that acute event and she easily could have been rear-ended or involved in an accident. We were both very thankful that our children were not in the van at the time. The check engine light immediately came on as well when this happened and when she got to the dealer, the service department identified a P0303 stored code suggesting a cylinder 3 misfire on the lower block. There were metal fragments in the oil and they noticed internal noise/knocking. They informed us that we would need to have a new engine installed. I spoke to our dealership today 2/13/24 and they felt like it was highly probable that a manufacturing defect related to the Honda service bulletin 23-097 for Connecting Rod Bearing problems could be the manufacturing defect and culprit for why our engine stopped working. This bulletin covers build dates of 2018-2019 Honda Odyssey vans from 4/9/2018 through 8/28/2018. Our build date was prior to October 2017 is what our dealer has told me. I do not believe that our defective engine would be available for inspection as I believe the dealership discarded it after installing a salvaged engine, also from a 2018 Odyssey. I do not believe any other agency inspected our defective engine after it was removed. The dealership also was unaware of the 23-097 service bulletin, since they were informed of that later in the year during November 2023. We took excellent care of this vehicle (bought new) and all service was performed on-schedule at dealership.

Filed Nov 23, 2023 · Engine · FL

When I was driving on the road a few hours away from my hometown, the check engine light started blinking. I took the car to a nearby Honda dealership. They said blinking engine light was due to misfire on cylinder 6. Solution is to replace fuel injectors, but the injectors are on back order with no release date. So I am not able to drive the car right now until it is fixed. Please advise. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 26, 2021 · Engine · NJ

The car turned on the engine light indicating misfire in all the engine cylinders the dealer informed me that it was due to the fuel injector system and they changed them they gave me the car but it no longer worked I returned to the dealer and they told me that I have to pay for that they uncover the engine and find out the damage that was allegedly caused by the injectors with factory defects and that I have to pay for the repair of the engine to change it if necessary with my money.