hello NICO fans. I have a trans problem. The van runs and is drivable, but can only get a few miles before it acts up and won't accelerate. I took it to a mechanic and was told I new a new trans. I did some online research and saw a yt video where dude had same issue with altima and just replaced the stepper motor and has been working fine since.
Can anyone help/advise me on what to do? Appreciate any feedback. Thank you

If the P1778 is the only code then there's a good chance a new stepper will fix it. If you have any other codes with it, particularly P0744 or P1715, then don't waste your time, the tranny is toast.

Thanks for the reply VStar. I can confirm that P1778, P0744 and P0456 have shown up intermittently, but I can't recall if all at the same time. Any idea how much a new trans (parts & install) would or should cost?

InfinitIly_fInnI wrote: ↑

Sat Jun 12, 2021 11:00 pm

Thanks for the reply VStar. I can confirm that P1778, P0744 and P0456 have shown up intermittently, but I can't recall if all at the same time. Any idea how much a new trans (parts & install) would or should cost?

A reman from NissanPartsDeal should run you about $1800, that will come with a Nissan parts warranty as long as you have a dealer do the install. If you DIY it, pay attention to "single use" parts and make sure you have receipts for all of them, otherwise the warranty will be void. Then you'll still need to get the TCM reinitialized by the dealer. There are lots of those trannies out there used, so your best bet might be a good used one with the donor TCM, that will make the whole operation plug-and-play.