Fault Codes:
Hyundai HX220 NL EPFC 2311（633-31）
Fault Description:
Electronic fuel injection control valve circuit - Condition exists. Fuel pump actuator circuit resistance too high or too low. Electronic fuel injection control valve circuit - There is an abnormal condition. The circuit resistance of the fuel pump actuator is either too high or too low
Fault Location:
Engine may exhibit misfire as control switches from the primary to the backup speed sensor. Engine power is reduced while the engine operates on the backup speed sensor. When the control is switched from the main speed sensor to the backup sensor, the engine may catch fire. The engine power drops when running with a backup tachometer sensor
