Fault Codes:Hyundai HX220 NL EPFC 3727（5571-7）
Fault Description:
High pressure common rail fuel pressure relief valve -Mechanical system not responding or out of adjustment.The fuel rail high-pressure relief valve has opened at a lower than expected pressure. High-pressure common rail fuel relief valve - The mechanical system is unresponsive or out of balance. The high-pressure relief valve of the fuel rail opens when the pressure is lower than expected.
Fault Location:
Possible reduced engine performance. It may lead to a decline in engine performance.
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