Honda civic keyless entry problems?

The central lock module is probably defective and it is located either in the driver's door panel or under the dash near steering wheel. A good electrician is what you need to test the module and its wiring if has a fault. You can use the "Find a Shop" feature of AutoMD for shops nearby in your area or you have to use a paper clip and bridge #4 and #8 terminals on the OBDII connector (then turn key on), then hold the lock/unlock buttons at the same time-the terminals are the top row, 4th and 8th(end) from the left side of the connector. Horn will beep 3 times when the code is learned by the new remote.