Your code 3 is a power/voltage missing code.
This chassis has 2 OVP units, so I would check the fuses there [ all4] first for module protection, and also check all power fuses in F1 box with a meter on each side , as sometime they look good , but have a poor connection
Those are RB codes , but you should be able to get ST codes from 10 after checking above.
Jumping car is infamous with OVP fuse short..
I returned/emailed you back the info.. check you email box