Hyundai Ioniq: Fuel Pressure Control Valve (FPCV) / Description and operation
Fuel Pressure Control Valve is installed on the high pressure fuel pump and controls fuel flow flowing into the injectors in accordance with the ECM signal calculated based on various engine condition.

Other information:
Inspection1.Use the mΩ tester to check the line resistance. Category Inspection area Inspection criteria Remarks Resistance(Line- Line)U - V35...
Troubleshooting1. Part diagnosis Items Cause Symptom Switch fuse Faulty fuse connection, Damaged fuse –
DTC Code : P0504–
Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble, ESP OFF light illuminated...
Categories
Seat belt warning light

As a reminder to the driver, the seat belt warning light will illuminate and
warning chime will sound for approximately 6 seconds each time you place the Engine
Start/Stop button to the ON position if the seat belt is unfastened.
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