Hey, I have a 2018 Cummins I purchased pre-tuned; however, I didn’t know anything about the tunes.

For my sanity, I ordered a tuner and custom tune for the truck; however, I was not given the required unlock cable for 18+ trucks.

My tuning guy is doing his best to help, and he feels 99% certain that he will fix the problem and that code; however, I am still freaking out.

I ordered the cable, have no idea how long it will take to get here, and there’s no guarantee it will help me install the tune to get the truck running again.

I’m without a truck right now and looking for any guidance out there.

I appreciate any help you can provide.

It has a FASS fuel lift pump that I also took out the fuse before attempting the flash.

I followed all directions as seen online all over, but I still ended up with this error.