Hey Scotty, I have a 1994 Honda Accord and seemingly randomly the D4 light starts blinking and the speedometer either starts bouncing or just drops to 0 then a little later the check engine light…

DesertCactus

Hey Scotty, I have a 1994 Honda Accord and seemingly randomly the D4 light starts blinking and the speedometer either starts bouncing or just drops to 0 then a little later the check engine light turns on. What could cause this?