I have a 2015 ram 2500 diesel Laramie edition 4x4. Full deletes running MM3 with trans tune.

While pulling my toy hauler (about 8k lbs empty and almost 16k fully loaded) last week I got the dreaded P0871 code. I spoke with a local transmission shop and was told that it's most likely the pressure sensor or a cross leak. I replaced the pressure sensor and did not fix the problem.

I've been researching a lot and think I could fix it with a new valve body but am not sure it will really fix anything long term.

So my question is, should I repair or replace the transmission? If repair, my local trans shop suggests the road ripper 3000 for around $6000.

Any thoughts or opinions on it? Is it good transmission or crap?

Any suggestions would help!

Thanks!