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HOMESERVICE MANUALSKIA2015RIO EX, 4D SEDANREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 2)DTC P0133: O2 SENSOR CIRCUIT SLOW RESPONSE (BANK 1/ SENSOR 1)INSPECTION REPAIRSYSTEM INSPECTION
2015 Kia Rio EX, 4D Sedan

System Inspection

2015 Kia Rio EX, 4D SedanSECTION System Inspection
  • Check leakage or clog of air 
    1. Check contamination, clog and installation of gasket.

      Any damage or installation of throttle body gasket.

      Any damage or installation of gasket between intake manifold and surge tank.

      Clog or contamination of intake manifold and injector by foreign materials.

      Contamination and open stuck between surge tank and PCSV by foreign materials.

      Any damage or contamination of HO2S (S1) by foreign materials.

    2. Has a problem been found?

      YES 

      Go to "CHECK FUEL LINE  " procedure below.

      NO 

      Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

  • Check Fuel Line 
    1. Check Clog, contamination and installation of Fuel Line as follows.

      Connection for each connectors in Fuel Line.

      Damage, interference and installation of vacuum hose connected to Fuel Line.

      Bend, Leakage and squeeze of pipe in Fuel Line.

      YES 

      Go to "CHECK FUEL PRESSURE  " procedure below.

      NO 

      Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

  • 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:  Approx. 3.5kg/cm2

    4. Is the fuel pressure normal?

      YES 

      Go to "COMPONENT INSPECTION " procedure.

      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.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.