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Home >> Hyundai >> 2021 >> Ioniq Plug-In Hybrid Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (1 Of 3) >> DTC P0133: O2 Sensor Circuit Slow Response (Bank 1/Sensor 1) >> System Inspection >> Check Fuel Pressure

Check Fuel Pressure

  1. IG KEY "OFF".
  2. Connect fuel pressure gauge on the fuel filter with fuel pressure gauge adaptor.
  3. Start engine again and measure fuel pressure.

    Specification:  4.89 ~ 5.30 kgf/cm2

  4. Is the fuel pressure normal?

    YES 

    NO 

    • Check any damage of fuel return hose or pipe.
    • Check any stuck of the valve in the fuel pressure regulator.
    • Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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