How do I fix this?

Question

P0562 System Voltage Low
P0222 low throttle pedal position sensor/switch
          B circuit
P0123 high Throttle/Pedal position sensor switch A
          A circuit
MIL COMMANDED.  FAILED

This guy wants $800
Am I getting ripped off or can my brother do it?
only 29,076 miles on truck.

Answer 1

P0562 Battery voltage low

Anytime there is a charging issue you do that first, you can expect all type a problem when system is not charging correctly, ( even though the code is battery voltage low this includes system that is  over charging ) From there you can start mak8ng assessment if any