Fault Codes:
Hyundai HX220 NL EPFC 325-4
Solution:
1. Check for open circuits or short circuits in the CR-46(#85)-CN-52(#13) line 2. Check for open circuit or short circuit in the CR-46(#86)- fuse box (#22) circuit
Fault Description:
When installing the fuel heating relay (model parameters) (Testing conditions (When the fuel heating relay is turned off For 10 seconds, the fuel heating relay drive unit measures a voltage of no more than 3.0V (Conditions for termination (When the fuel heating relay is turned off For 3 seconds, the fuel heating relay drive unit measures a voltage greater than 3.0V
Fault Location:
1. Control function - Fuel heating operation failed

