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Home >> Hyundai >> 2021 >> Ioniq Plug-In Hybrid Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (3 Of 3) >> DTC P2270: O2 Sensor Signal Stuck Lean (Bank 1 Sensor 2) >> Component Inspection >> Visual Check

Visual Check

  1. IG "OFF" & Disconnect HO2S (S2) connector.
  2. Check that HO2S (S2) is contaminated or damaged by foreign materials.
  3. Has a problem been found?

    YES 

    NO 

    • Substitute with a known - good HO2S (S2) and check for proper operation. If the problem is corrected, replace HO2S (S2) and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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