I have a DD13 that has multiple issues.

Whatever "Event" occurred initially you now have a Can-buss issue that involves your Data-link connector, need to identify and verify ALL terminating resistors for your truck, thanks.

 

625 is a CPC or CAN code, the network link not working the way it should
1231 is a lost ACM message

Were you having ALL of those issues before you swapped the ignition and harness?

I would first check the starting/charging system. If your batteries are in good condition, look for a bad connection, broken wire or bad ground.
If that checks out fine, make sure that your network harnesses are clean and secure and intact.
A recent module reflash or reprogramming attempt might also manifest this way, but you'd probably notice that before the laptop was shut off.
Let us know how you make out.

 

I have one for not everyone I DD 15 EGR actuator leaking from the metal hose coming from the actuator going into the engine I replaced the part 3 times does anybody knows why or where is causing the back pressure is coming from or do I need to buy a new actuator that can be the problem? No lights on or anything