will the transmission from a 2003 honda odyssey fit a 2000 honda odyssey and will it work with original trans computer
2003 had a 5 speed tranny, 2000 had a different 4 speed tranny. I’m no expert but I’ll bet the answer is no.
The 2000 Odyssey and the 2003 Odyssey are both second generation Odysseys (at least according to Wikipedia).
The Odyssey also received a significant increase in power from 210 hp (157 kW) to 240 hp (179 kW) in 2002. Also added for 2002 was a five-speed automatic transmission, side airbags, rear disc brakes, and a few minor cosmetic improvements on the outside as well as the inside.
Maybe if you used both the transmission and the engine from the 2003 Odyssey, your chances of success might increase.