Fault Codes:
Hyundai HX220 NL EPFC 531-4
Solution:
1. Check for open circuits or short circuits in the CD-74(#B)-CN-51(#20) lines 2. Check for open circuits or short circuits in the CD-74(#A)-CN-51(#32) lines 3. Check for open circuits or short circuits in the CD-74(#C)-CN-51(#31) lines
Fault Description:
For 10 seconds, the pressure sensor measures a voltage of less than 0.3V when walking backward
Fault Location:
1. Monitor - The pressure display for walking backward is faulty 2. Control function - The power control for walking coordination has failed
