transmission trouble for sure
The D4 light on a Honda Accord is the symbol for the 'check transmission' light. This light appears when the computer senses something wrong in the drivetrain. The computer should be diagnosed at a proper repair shop in order to source out what exactly is causing the problem.
The check engine light may be flashing on a 1996 Honda Accord if a timing issue is detected or oil pressure is low. The exact cause can be determined by connecting an OBDII code reader.
A flashing D4 light indicates a problem with the transmission. It may just need the transmission fluid changed or it may be a more serious problem. I Recommend you seek professional help and do not drive this vehicle until you get the problem repaired or you may do serious damage to the transmission.
Fill up the fuel tank.
Sounds like you need a speed sonsor
A flashing D4 light on Honda Accords is commonly the result of a bad speed sensor. The speed sensor is located on the transmission and sends a signal to the speedometer and a signal telling the transmission when to shift.
It's the transmission computer.you need to replace it.
speed control sensor is bad
The primary cause for the drive light to flash on a Honda Accord is a malfunction in the transmission. Error codes from the vehicle's computer can be read using an OBDII reader.
The D4 light on a Honda Accord is the transmission warning light. These come on when there is a malfunction on the transmission. For the problem to be diagnosed properly the vehicle should be taken to a dealership.
It is flashing to let you know a trouble code for the transmission is stored in the computer. You have to take it to a shop to have the code read to find out what is wrong.
Replace your AT Control Unit (Automatic Transmission Computer)