Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Hyundai >> 2007 >> Accent GLS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> System Inspection

System Inspection

  1. Exhaust gas system check.
    1. Visual check.
      • Check air leakage at junction of HO2S or Catalyst converter.
      • Check looseness, poor connection, or damage.
    2. Is there something wrong?

      YES  : --> Repair as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      NO  : --> Go to "COMPONENT INSPECTION " procedure.

scientia non olet · About Mike's Workshop Manuals