I have a 99 honda accord lx shifting issues?

I have a 1999 honda accord lx 4 cyl V-Tec engine i was having some issues with the car running rough i have to fix the TPS after i fixed that the car ran great for like 8 hrs shifted slighted rough nothing bad then at one point i got into the car started it let it warm a little bit pulled off from the curb and it wont go into second gear its like a false neutral, the code p1738 came up at one point while fixing the throttle could the problem im having be the 2nd 3rd clutch pressure switch?

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