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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (Engine Control System Diagnosis - 2.0L (3 Of 3)) >> DTC P2271-00: O2 Sensor Signal Stuck Rich (Bank 1 / Sensor 2) >> Wiring Inspection >> Terminal And Connector Inspection

Terminal And Connector Inspection

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition switch is turned "OFF".
  2. Monitor the O2 SNSR VOL.-B1/S2 parameter on the Scantool data list while wiggling the wiring harness and related connectors. Refer to "Signal Waveform & Data" in the "GDS DATA ANALYSIS " procedure.
  3. The value should remain more or less unchanged. If not, check for the following conditions:
    • Check for corrosion on terminals
    • Check for terminal tension (at the HO2S and at the PCM)
    • Check for damaged wiring
    • Check the HO2S ground circuit for a good connection
    • Check the 15A sensor2 fuse
    • Check front and rear HO2S for connections being reversed.
  4. Was a problem found in any of the above areas?

    YES 

    NO 

    • Go to next step below
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