Trans transmission will not move into second gear from first and the D4 light is blinking on the instrument cluster it says there is a p0780 and that suggests that there is an automatic transaxle malfunction if anybody could help me that would be great thanks transmission fluid was also changed so I'm a little stuck

 

The blinking is telling you the code, are you saying the code you retrieved is P0780? It's important to know what year car to help.

Common issues with not going into second is the shifter solenoids are clogged (take them off and clean them) or low fluid. Check those first.

Also if there is any discoloration or burnt smell from the tranny fluid.

 

Thank you so much for responding it is a 2000 Honda Accord 2.3 l and the transmission fluid was changed about 4 days ago so I don't think that's the issue as far as I know

 

OK, then check the shifter solenoids and clean them.


This will show you how to remove them. Just clean off the filters, hopefully they are simply clogged. If not, then hoefully replacing the 2nd gear solenoid will let it shift again.

 

 

I have 2002 Accord V6
Clean valve A solenoid filter and A/t control solenoid filters tube too and solenoid b&c
when i put back everything, drive the car but i see that rpms goes up to 2500 transmission did the shift and then D4 star flashing and check engine light come up and TCS light too
when back home and i notice that i press gas pedal but car was moving real slow, so go down to 2nd gear and kick hard car move more faster and i get home park the car i turn off and then turn on and tcs light turn off and d4 stop flashing and check engine turn off
but i used a scanner and get the code P0780 Shift malfunction
and i also have 70-2 A/T system malfunction
i replace all sensor
lock up solenoid, b&c solenoid, a/t control solenoid
And still getting the same code
transmission was slipping little bit from 2nd too 3rd that
why i clean the solenoid
Can someone help

 

Please start a new thread.

 

I have an 02 Accord (I have owned it 13 years), and the same thing happened. It's my teenagers car. Changing the speed sensor first, then a flush and fill, changing the A/T filter. Did you find a fix?