2001 Honda civic 170i has no enough power on reverse gear....

SOURCE: 2001 honda civic problem with transimsson is code

Internal trans failure, Trans would have to be rebuilt.

SOURCE: 2001 Honda civic overheating. Coolant level ok.

UNDER THE HOOD IN A RECTANGULAR SHAPED BLACK BOX. UNDER THE COVER IS THE DIAGRAM FOR THE FUSES AND RELAYS. HOPE THIS HELPS. KEEP ME POSTED PLEASE. BEST OF LUCK. THANKS FOR USING FIX-YA

SOURCE: my 98 honda civic Lx wont shift into gear

check your shift linkages if the bushing is worn out you may have problems shifting or it could be a bad transmission

SOURCE: Automatic Honda civic wont reverse

take it back. They missed something. You should have a warranty on the work. Of course that does have limits which include both mileage driven and months since the vehicle was released to you. I am guessing you did not do the work since your saying you had it done. There really isn't much you can do other than have it taken apart and checked. So long as your TCM (transmission control module is not bad= computer for transmission)

SOURCE: replacing fuse on 2001 Honda Civic Instrument panel

Use fuse size listed on fuse panel, panel should show diagram and fuse sizes. Putting a larger fuse where it does not belong could result in melted wires.