Fault Codes:
Hyundai HX220 NL EPFC 3563（5491-4）
Fault Description:
Aftertreatment diesel exhaust fluid line heater relay -Voltage below normal or shorted to low source.Low signal voltage detected at the diesel exhaust fluid line heater relay. Post-treatment diesel engine exhaust treatment fluid pipeline heater relay - voltage lower than normal value or short-circuited to low power supply. The relay signal voltage of the exhaust gas treatment liquid pipeline heater was detected to be too low.
Fault Location:
Possible reduced engine performance. It may lead to a decline in engine performance.
