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Home >> Hyundai >> 2019 >> Ioniq Plug-In Hybrid >> 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
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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 ~ 5.30kgf/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.