Fault Codes:Hyundai HX220 NL EPFC 4155（5746-3）
Fault Description:
Aftertreatment 1 diesel exhaust fluid dosing unit heater relay -Voltage above normal,or shorted to high source.High signal voltage detected at the aftertreatment diesel exhaust fluid dosing unit heater relay circuit. Post-treatment 1 Diesel engine exhaust treatment fluid injection unit heater relay - voltage higher than normal value or short-circuited to high power supply. The signal voltage of the relay circuit of the heater in the exhaust gas treatment liquid injection unit is detected to be too high
Fault Location:
Possible reduced engine performance. It may lead to a decline in engine performance.
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