Hello,
I will appreciate if someone can help me out. After I got the engine light on, I got a message "4x4 temporarily unavailable" and my truck, a 2018 Ram 3500 with an Aisin transmission, went into limp mode. This is the second time it happened to me. But back then, after I stop and started again, after a while everything went back to normal. This time I couldn't do nothing, except take it to the mechanic. He checked for codes and changed the transmission pressure switch, and cleaned cables, but still on limp mode. He couldn't figured out what it is and he told me that it will be better for me to take it to the dealership. Guys, it's hard for me to take it to the dealership. I can't afford it and my main problem is that this is my bread and butter. Not only for me, but for my family. I will appreciate it if someone can give me some information about what is going on with my truck. Thank you and you all have a great day.

 

What codes are you getting?

 

I'm getting p0868
Thank you for your reply. It doesn't go away.
my mechanic checked wiring. Internal harness, npf. Replaced pressure switch..installed tcm. Replaced filter and still the same.
once again thanks my friend. Let me know if you can help me out. My problem is that my truck is deleted and I don't know if they will work on it at the dealership.

 

Low line pressure in the trans.... LOTS of possible causes, from clogged filter, to bad sensor, to failing pump...... Whens the last time the trans was serviced??

 

I service the truck even before the schedule tim . The mechanic changed the filter as well, but the code still there. I'm beginning to think it has to do something with the snow, salt and mud I got up in N Dakota. Thanks for your reply. I really appreciate it.