How can fix code C1242?

Question

Car had car accident left side after repair all parts when I start drive it is all ok but after my speed 20mph it show sign slide car and sound and my car doesn't ride little down speed it is work

Answer 1

C1242 Electronically controlled brake system  open in IG1 / IG2power source circuit

Left side at the repair if any ground properly grounded? After most body repair the majority of causes is insufficient ground To set P1242 the IG1 would have no voltage applied to it, the ground for it should be rechecked.