D4 light on

[blackedout]

Alright i have been searching for about the past hour and a half and can't really find anything.. Ok so my D4 lights stays on and when you put it in drive its only in third gear thats it no other gears.. I tried pulling the codes put when i do it it goes off and i stared at it for like 20 min a while ago and it never blinked once.. So im stumped.. Help me out guys... thanks

[C91BLX7]

Get your TCU replaced.

[JDMchristian991]

tcu.

[xkjnboix]

i had the same problem. go to the junkyard and be sure to pull a tcu for your engine code. honda wants 1000$ for brand new tcu. junkyard u can prob get from 35$-75 tops

[blackedout]

alright and the tcu is the small box under the dash correct? well the aluminum looking box with one plug in the bottom.. As for junk yards i don't have one here..

[blackedout]

edit read another thread and found its under the carpet on the pass side.. But im still confused as to how to be able to tell im getting the correct one?