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Transmission Lurching - Codes U0122-00 U3000-49

Pinki

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My PB story is like most others. Cold weather, battery, and christmas tree light errors (every light and error except the check engine light LoL) at about 5000 miles.

Ford had to tow my truck plus trailer 200 miles over state lines when I was snowmobiling and overnight low temps were very cold. they ddint even get a tow truck up there to the mountains for 30 hours.

Dealership (not the one i bought it from) told me they wouldnt even look at it for a week Feb 2022. I was like its just a dead battery. i didnt want to leave my trailer and snowmobiles there. So i went back armed with a brand new H7 battery. Put it in no dice, still Christmas. hooked up my trailer (Trusty ecoboost 3.5 Taurus SHO) towed it home with the old battery just to see what state it was in. Charged up the old battery ok, but it goes dead on its own in 2 days, just sitting there.

Well my ford pass is setup to auto start my car at times. and i got an alert that my car started as scheduled (with the new battery in it still). Woah!! Went down to the dealer and drove it home.

I checked the codes and it had a few errors (50 ish) and i reset them most went away. Truck was fine except the rear backup assist was deactivated. Trailer brakes werent working (this was already recalled). and i drove it for 3000 ish miles while waiting my turn for the recall. until one day the transmission started lurching badly.

Took it to the dealer i bought it from to have that fixed. they got the rear backup fixed and the recall but my transmission keeps lurching. they report there are no codes which is a lie. I have had it in to that dealer 2x. no fix.

Took it to a different dealer 3rd one now. after calling them and them looking at it with my VIN number they sounded much more competent (said the transmission control module was disconnecting from the main ecu frequently). they updated the blue cruise and stated i needed to drive it 250 miles. well the codes were still in it when i picked it up. and the transmission is still lurching badly on starts and stops. i have now driven the 250 miles basically entirely freeway with almost no starts or stops. im about to take it in for the 5th time. I don't know how much a new PB transmission costs but im sure it isnt cheap.

These are the codes i havent been able to clear since feb after 4 trips to the dealer.

U0122-00 - Lost Communication with Vehicle Dynamics Control Module

U3000-49 - Control Module

Side note, If I chose to lemon out this truck I wouldn't be able to get a new one because of the rise in interest rates. So id rather not do that.
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Pinki

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Got her back into the dealer today, Monday. Showed him the codes on my phone, (previously i had mentioned the codes but never force fed him the exact numbers, i had assumed they would pull the codes and look for tsbs) Service manager says there are 3 TSBs for the first code. so what the hell were they going off of for what they fixed friday. either way he stated they dont have a true fix, that is scheduled for september, until then there is a band aide to deactivate 3 modules, so i can drive it while i wait.

he went out to move the truck and preproduced the problem 2x (the actual lurching - which as described by another member in another post is like being lightly rear ended) in the parking lot. which is good i guess.
 

AAWhyte

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Man that does suck when your new truck has issues like that. Hope they can get them sorted out for you.
 

notabot

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Am I correct in saying this only happens after a long driving session?
 

Snakebitten

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I'm also curious if it would stop lurching if the ICE just stayed on? (you probably know why I ask. The auxiliary transmission fluid pump)

If it's in tow haul and the ICE stays running when you come to a stop, does that alleviate the lurching?

An auxiliary pump not doing its job causes crazy on/off presurized/unpressurized transmission behavior.
 

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Infidex

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I'm also curious if it would stop lurching if the ICE just stayed on? (you probably know why I ask. The auxiliary transmission fluid pump)

If it's in tow haul and the ICE stays running when you come to a stop, does that alleviate the lurching?

An auxiliary pump not doing its job causes crazy on/off presurized/unpressurized transmission behavior.

As snake mentioned, sounds like aux transmission pump. I had same issue, took 9 weeks to get the part in, to then have the shift solenoid break before getting it back. I'm 7 weeks into waiting on that part. You should be able to just leave in tow mode and problem goes away until you can get solved (if aux pump).
 

Ziggy73

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Got her back into the dealer today, Monday. Showed him the codes on my phone, (previously i had mentioned the codes but never force fed him the exact numbers, i had assumed they would pull the codes and look for tsbs) Service manager says there are 3 TSBs for the first code. so what the hell were they going off of for what they fixed friday. either way he stated they dont have a true fix, that is scheduled for september, until then there is a band aide to deactivate 3 modules, so i can drive it while i wait.

he went out to move the truck and preproduced the problem 2x (the actual lurching - which as described by another member in another post is like being lightly rear ended) in the parking lot. which is good i guess.
If he feels like you're getting hit from behind it's auxiliary transmission pump, mine went in yesterday for it, they said it'd be 5 to 7 days for the part, it's inside the pan so I should be a pretty easy install.
 
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Pinki

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What dealer did you take it to? Several states away im sure.

Mine is still broken. It drives fine in tow haul mode. Which means it definitely is the auxiliary transmission pump. Inhave codes for it too. Everytime i take it in, they do nothing for 2 or 3 weeks. They assure me they have tested the atp...

Either way. Hoping they learn how to fix it and have parts next time i take it in.
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