1992 4Runner 4wd automatic transmission

I’m getting O/D codes 62,64,65
Any advice if I should get a solenoid service filter kit to see if that’s the fix or any other reason why those specific codes are appearing and solution for them.
Lately I been noticing when going 70 mph I’m staying around 3300-3500 rpms
truck gets to normal operating temperature
one other thing when I bought my 4Runner it’s missing the O/D button I don’t know if that’s the reason why it’s not shifting correctly or activating O/D