LEMON Manuals: Even more car manuals for everyone
Home >> Hyundai >> 2009 >> Elantra GLS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> System Inspection >> Rear Ho2S Inspection

Rear Ho2S Inspection

  1. Visually/physically inspect the rear HO2S for the following conditions:
    • Ensure that the HO2S is securely installed (Pigtail and wiring harness not making contact with the exhaust pipe).
    • Check for corrosion on terminals
    • Check for terminal tension (at the HO2S and at the ECM)
    • Any road damage
  2. Was a problem found in any of the above areas?

    YES 

    NO 

scientia non olet · About LEMON Manuals