Re: 1997 Civic auto transmission trouble
I've got transmission problems too P0700 & P0730, I cleared the codes and they haven't come back yet.
From my research basically if you use anything other than Honda tranny fluid you will cause problems, there also may be issues with the solenoids getting clogged, may need need to replace linear shift solenoid (google that to double check).
Otherwise your transmission is likely hosed and you will need a new one.
Sorry I can't be more help I haven't resolved my own issue yet. First off try replacing fluid, you need to replace it (don't flush just drain) with genuine honda fluid. Drive 100 miles do the same, you need to do that 3 times. However and here is the caveat that has made me pause doing this myself. If you haven't looked after the transmission in a high mileage car replacing the fluid can actually hasten its demise, so it is a risk. If you've been replacing it on time then go ahead, but see if it drives worse after the first drain and fill, if so don't bother doing it again.