Fault Codes:
Hyundai HX220 NL EPFC 3578（4376-4）
Fault Description:
Aftertreatment diesel exhaust fluid return valve -Voltage below normal,or shorted to low source.Low signal voltage detected at the diesel exhaust fluid return valve. Post-treatment diesel engine exhaust treatment fluid reflux valve - voltage lower than normal value or short-circuited to low power supply. The signal voltage of the tail gas treatment liquid reflux valve was detected to be too low
Fault Location:
Possible reduced engine performance. It may lead to a decline in engine performance.
