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Home >> Kia >> 2008 >> Rio Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (1 Of 2) >> DTC P0135 Ho2S Heater Circuit (Bank 1/Sensor 1) >> Component Inspection

Component Inspection

  1. Check Heater resistance.
    1. IG "OFF".
    2. Disconnect HO2S (B1 S1) connector.
    3. Measure resistance between terminal 3 and 4 of HO2S (B1S1) connector (component side).
      RESISTANCE SPECIFICATION

      Item Specification
      Heater Resistance Approx. 9.0Ω at 20°C (68°F)
      Fig 1: Measuring Resistance Between Terminal 3 And 4 Of HO2S (B1S1) Connector
      G04862158Courtesy of KIA MOTORS AMERICA, INC.
    4. Is the measured resistance within specification?

      YES 

      • Substitute with a known-good ECM/PCM and check for proper operation.
      • If the problem is corrected, replace ECM/PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
      NOTE: There is a memory reset function on scan tool that can erase optional parts automatically detected and memorized by ECM/PCM.
      Before or after testing ECM/PCM on the vehicle, use this function to reuse the ECM/PCM

      NO 

      • Substitute with a known-good HO2S (B1/S1) and check for proper operation.
      • If the problem is corrected, replace HO2S (B1/S1) and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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