d4 is flashing due to poor quality chips in tcu.

solution is to disconnect battery cable for 5min. this should fix for a while if flashing reoccurs repeat process with battery cable. you will have to reset time and radio.
cost of repair 0$dollars and .0$cents

my 94 accord d4 flashes about anywhere from 2months or as little as two week intervals disconnect batt. fixes everytime.