Automatic Transmission Control Module problems of the 2018 Honda Odyssey

Recently had the fuel pump recall completed. Within days had intermittent dash emissions light come on then go away. Then a few weeks later, while driving, my Odyssey put itself into n and I coasted to a stop. It would not allow me to put the car into p or anything. I had to put the emergency brake on in order to not roll forward. The van at that point would not shift into any gear. It was towed to dealership and I was given the following 2k dollar repair needs. Problem. Advise. [other]: tcm (transmission control module) and transmission sub-harness needs replaced.

9 speed transmission issue: ever since I purchased this vehicle around 50,000 miles in February of 2021 (mileage currently at 118,048), I noticed a very obvious delay in acceleration from a complete stop. Changing to eco drive mode and sport mode changes slightly, but still has delay. Transmission fluid has been changed 3 times since owning this vehicle and everytime it has, there was no noticeable changes in symptoms. Delayed acceleration occurs more consistently at normal operating temperatures. Brought vehicle to Honda dealership after purchasing. They performed a tcm software update. Problem still occurs to this day. Multiple occasions occured where me and my girlfriend are driving and attempting to make a safe left turn only to proceed, but in process of attempt, the vehicle delays while facing oncoming traffic.

2018 Honda Odyssey failed transmission systems. This vehicle had recalls in regard to tcm module and softwares in past. Normally transmission system should last well over 150,000 miles for this type of vehicle. My car failed at 74000 miles. That too without any advanced warning. Vehicle was maintained and serviced at same dealership regularly where it was purchased. Honda is claiming its outside their 60000 mile powertrain warranty. Honda expects me to pay over 10,000 dollars for repair. I believe my vehicle is having issues with transmission related to tcm module recall of 2019 and recall 04v176 of 2023. Honda is refusing to look in to possibility of my vehicle's issue could possibly related to those recalls. I believe those recalls need to be looked at and my vehicle should have been involved in those recalls. I have documented proof for all services performed and current vehicle inspection report.

The transmission has intermittent harsh or jerky upshifts with steady acceleration, or the mil comes on with dtc p0716. Abnormal tcm adaptation values or a miscalculation in the tcm software causes the mil to come on with dtc p0716. The harsh upshifts cause a momentary driver distraction which may cause an accident.

The contact owns a 2018 Honda Odyssey. The contact stated that while attempting to accelerate the transmission would not properly shift into gears and would also experience rough shifting. Also the vehicle would not properly accelerate up to speed when pressing the accelerator pedal and a loud mechanical noise was present coming from the engine compartment. The vehicle was taken to the local dealer who performed a tcm software update but the failures continued to occur. In addition while pressing the brake pedal to stop the vehicle had experienced jerking and vibrations and the driver side and passenger side sliding doors would erroneously reopen after being closed. The cause of the failures were not yet determined. The manufacturer was notified of the failures. The failure mileage was 50,000.

The contact owns a 2018 Honda Odyssey. The contact stated while attempting to accelerate, there was delay in response from the vehicle. The vehicle was taken to the dealer for diagnostic testing. The mechanic was unable to determine the cause of the failure however, the tcm module software was updated and the vehicle operated normally. The contact stated the dealer informed him that the failure could reoccur. The manufacturer was contacted and suggested that the vehicle be diagnosed by the dealer. The failure mileage was 17,000.