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Home >> Hyundai >> 2019 >> Elantra Eco >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnosis - 1.4L (1 Of 3) >> DTC P0133: O2 Sensor Circuit Slow Response (Bank 1/Sensor 1) >> System Inspection >> Check Fuel Pressure

Check Fuel Pressure

  1. Connect GDS to DLC (Data Link Cable).
  2. Warm up the engine to normal operating temperature.
  3. Monitor "Low Pressure Fuel Pressure" parameter on the "Current Data" with GDS.

    Specification  : 500 ± 20 kPa

  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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