Fault Codes:
Hyundai HX220 NL EPFC 123-4
Solution:
1. Check for open circuits or short circuits in the CD-70(#B)-CN-51(#22) lines 2. Check for open circuits or short circuits in the CD-70(#A)-CN-51(#32) lines 3. Check for open circuits or short circuits in the CD-70(#C)-CN-51(#31) lines
Fault Description:
For 10 seconds, the negative pressure sensor measures a voltage of less than 0.3V
Fault Location:
1. Monitor - Negative pressure 1 display fault 2. Control Function -IPC operation failed, and the optional accessory flow control failed
