just bought a 2001 odyssey ex with 136,000 from a used car dealer. the reason i bought this one was because it was a 1 owner van and it had all the service records in the glove box since new. it had the transmission replaced at 42,000 under warranty from the dealer so i thought it would be ok so i do a 3 times trans fulid change with honda atf and install a hayden trans cooler and a magnafine filter. now 3 weeks and 400 miles later i get that po740. the only thing i fell that it does is shift a little firm from 1st to 2nd does that code mean that the trans converter is no good or maybe just the solenoid is going bad any help would be great.