MY CHECK EPC LIGHT CAME ON SO I TOOK MY CAR IN FOR A DIAGNOSTIC TEST THE CODES FOUND ARE:17831 P1423 Secondary Air Injection System (B1) - Flow too Low
17819 P1411 Secondary Air Injection System (B2) -Restricted Flow A
18041/P1633 ACCELERATOR PEDAL SENSOR SIGNAL LOW/ABSENT INTERMITTENT FAULT. FAULT TRACED AND FOUND:ELECTRONIC THROTTLE ASSEMBLY INTERNALY FAULTY

CAN YOU TELL ME WHAT DOES THIS MEAN AND WHAT PARTS DO I NEED TO GET IT FIXED