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HOMESERVICE MANUALSKIA2015SEDONA EXREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 4)DTC P0154: O2 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 2/SENSOR 1)COMPONENT INSPECTIONVISUAL CHECK(HO2S(B2S1))
2015 Kia Sedona EX

Visual Check(HO2S(B2S1))

2015 Kia Sedona EXSECTION Visual Check(HO2S(B2S1))
  1. IG "OFF" and disconnect HO2S(B2S1) connector.
  2. Check that HO2S(B2S1) is contaminated or damaged by foreign materials.

■ Check HO2S(B2S1) performance 

  1. Warm up the engine to normal operating temperature.
  2. Connect VMI to GDS and select "Oscilloscope".
  3. Connect Channel A positive probe to Pin No. 1 (high) and Channel A negative probe to Pin No. 2 (low).

    Specification:  Refer to Fig 1

    Fig 1: Screen Display - Signal Waveform Of HO2S1 At Normal Condition
    G00571243Courtesy of KIA MOTORS AMERICA, INC.
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.