P0780 Honda Code - Shift Control System Fault

2000 Honda Accord p0780. I just my transmission rebuilt less then a day my d4 lights blinking and the check engine light comes on. Should have been fixed while they rebuilt the transmission.

Transmission rebuilt was not done properly, you should take it back to the shop.

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I took my car back to the shop they'll will fix the transmission and I ask the mechanic why my power steering pump is making a whining sound because it wasn't doing it before. The machanic said that they didn't touch the power steering pump.

Check the power steering fluid level. Low level can make the power steering noisy.

power steering fluid is filled up to the line.

I have 2002 honda accord 2.3L and recently experienced this code after driving through the heart of one of the worst storms Ive seen, local honda dealership claims the interworkings of the trans are still in good shape, good fluid, full and no metal shavings, leading them the believe the water I took on shorted or damaged A/T clutch solenoid A or B, I also started experiencing the whining noise that sounds like power steering but to me it actually sounds like its coming from the trans. How difficult/expensive would it be to repair/replace one or both of the clutch solenoids?

You need to remove the transmission pan and valve body in order to access the clutch solenoids for inspection. If possible have a transmission shop inspect the transmission for you. They may be able to inspect the solenoids with special tools without removing the transmission pan.

Someone please help me! I just bought a 2002 Acura 3.2 tl about a month ago and the car drove fine for about 2 weeks then it I started having a problem with it taking 3rd and 5th gear! What it does is shifts from 1st to 2nd gear with no problem(no hard shifting or slipping) but when it's at range to shift to the 3rd gear it does like a down shift type of thing(decelerates) and doesn't take 3rd gear then the D5 light starts blinking then engine light and TCS light comes on and it stays in 2nd gear until I turn the ignition off and on while in motion then it goes to 4th gear until it' starts doing the same thing when needing to shift to 5th gear! The obd2 reads a p0780 code stating "failed shift selonoid" What can this be? Idk a thing about transmissions but I'm almost 100% sure it isn't a rebuilding of tranny issue as it doesn't slip or shift gears "hard"... someone please help me, I don't have 1,200 bucks for a tranny rebuild job

Start by inspecting the transmission fluid level and condition. Change fluid if necessary. If the fluid it's OK and you still have the problem, you may have to have a transmission shop inspect the vehicle for you. It doesn't mean you have to rebuild the transmission, but you may have to replace the shifting solenoids.

Sorry, many typos in my last comment. *This code came up in my 2002 Acura 3.2 TL. It actually came up for me as well after driving in a storm. I'm now having problems when I put the gear in reverse, there's lots of slipping, almost like I'm in neutral. It also jumps from 4th to 5th, it's not a smooth transition at all. Help? I don't have much money and try to do as much as I can on my own.

Start by inspecting the transmission fluid level and condition. Change fluid if necessary. If the fluid it's OK and you still have the problem, you may have to have a transmission shop inspect the vehicle for you. Unfortunately there might be a problem with the solenoid.

This code recently popped up on my 2001 honda accord and when I drive it jerks .

You should start by inspecting the transmission fluid level and condition. When was the last time you change the transmission fluid? if the fluid is OK, then you may have to replace the shifting solenoid valve.

Where about would the solenoid on this trans would be located 2001 honda accord ex v6

The shift solenoid is on top of the transmission. Here is the only image I got.

Just drive the vehicle,the winning noise will cease after a few drive cycles.

I JUST GOT MY ODYSSEY 04' ..SCANNED AT AUTOZONE .THEY GAVE ME THE CODES 720 730 740 AND 780..SOMEBODY CAN TELL ME IF I NEED TO REPLACEMENT NEW OR. USED? ..

Do you any driveability problems? can you clear the codes?

I suggest starting by checking the transmission fluid level and condition. Make sure the level is OK, then clear the codes and drive. If the light comes back with all the codes, then you may have to have a transmission shop check the transmission for you.

I CHANGED THE TRANSMISSION FLUID..FILTER AND. ONE OF THE SOLENOIDS..I DID CLEAN UP THE OTHER. SOLENOIDS. .STILL. CAN DRIVE LIKE 3 MILES OK..AFTER THAT START LIKE WANT TO STALL. .

HI, my V6 2000 Accord have the same code. Driving no issue except when it come to a sudden stop (not frequently happened), it D light on Dashboard flashing. As this occur i often pull over and restart the engine. Driving fine. Although I could have keep driving. it just bother me seeing flashing light. Could you suggest what kinda repair do i need to be done before bring it to the mechanic. Transmission fluid, was filled up very recently. Thank you

The most likely cause of the problem is shifting solenoid valve, and that is something you probably can't do at home, you have to have your mechanic change the solenoid valve.

I recommend starting by changing the transmission fluid, it's part of the maintenance anyway. If the problem persists you could replace the shifting solenoids, but due to the age of your vehicle, it may be necessary to rebuild or replace the transmission assembly.