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Home >> Hyundai >> 2004 >> Elantra GLS, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Trouble Shooting Procedures >> DTC P2270 & P2271: O2 Sensor Signal Stuck (Bank 1, Sensor 2) >> Inspection Procedures >> 1. Check DTC Relating To Catalyst & Rear HO2S

1. Check DTC Relating To Catalyst & Rear HO2S

  1. Connect a Hi-Scan (Pro) to the data link connector.
  2. Turn ignition to ON position and monitor other DTCs.

Are DTCs relating to catalyst or HO2s also set? 

No: Go to next step.

Yes: Do all repairs associated with those codes before proceeding with this procedure.

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