2017 Honda Odyssey Transmission Problems

While driving, your van suddenly jerked hard when shifting between 2nd and 3rd gear, then the check engine light turned on along with a forward collision sensor failure warning. Your van entered limp mode (reduced power mode) on the highway, which created a dangerous situation. The Honda dealership investigated twice and determined the transmission needs to be completely replaced.

Your engine is experiencing serious problems starting at 62,000 miles, including loss of acceleration, jerking, and a flashing check engine light. Multiple mechanics have found failed ignition coils, spark plugs, and now piston ring failure, which requires major engine rebuilding work. The dealer initially blamed transmission fluid, but the real issue is internal engine damage that makes the car unsafe to drive at normal speeds.

Your transmission is shuddering or vibrating while driving, which both the Honda dealer and an independent mechanic have confirmed. The dealer claims the problem hasn't reached their threshold for fixing it under warranty, but Honda did issue a recall/extension warranty for your torque converter and transmission. A sudden transmission failure could be a safety risk, so this issue needs to be addressed before it worsens. The repair will likely involve replacing the torque converter, which is the part that transfers power from your engine to your transmission.

Your 2017 Honda Odyssey has had trouble converter issues (error code P0741) occur twice, which you documented with a diagnostic scanner. After changing your transmission fluid, the error cleared, but when you tried to use Honda's extended warranty coverage at the dealership, they refused to proceed because the error code was no longer showing on their system—even though you provided documentation proving it happened during the warranty period. You're now stuck between the dealership saying they can't help without a current error code and Honda saying the dealership has final say, putting you at risk of losing warranty coverage as you approach the mileage limit. This may require Honda to override their policy and authorize the dealership to perform the torque converter inspection and repair based on your documented evidence.

Your engine ignition coils have needed repair multiple times, including an incident where your van lost power while driving uphill with your family inside. More recently, your keyless entry system has malfunctioned and your van is losing power and won't start. The dealership has replaced the coils several times over a 3-week period, but the problem has returned. Fixing this will likely involve diagnosing the ignition coil system and keyless entry module for electrical faults, and replacing any faulty components.

Your transmission has rough or jerky shifts around 20 mph when you accelerate. This could indicate a transmission fluid issue, worn internal components, or a solenoid problem that needs diagnosis.

THE VEHICLE WAS IN MOTION ON A STREET AND NORMALLY DECELERATING FROM 30 MPH TOWARDS A STOP LIGHT. WITHOUT WARNING THE CAR SUDDENLY DECELERATED AND STALLED THE ENGINE. IT WAS AS IF THE TRANSMISSION SHIFTED INTO PARK. THIS HAPPENED THREE OTHER TIMES AND EVENTUALLY, THE CAR WOULD NOT SHIFT INTO REVERSE DESPITE INDICATING THAT IT WAS IN REVERSE. ONLY ON THE 5TH TRIP THE CAR HAD A WARNING ERROR LIGHT APPEAR. THE CAR HAD TO BE TOWED TO THE DEALERSHIP AND THEY FOUND A CATASTROPHIC TRANSMISSION FAILURE. THE CAR WAS ABOUT 1 YEAR OLD AND HAD LESS THAN 11K MILES ON.