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Home >> Saturn >> 2004 >> Ion Red Line >> Repair and Diagnosis >> External Pages >> Different car >> Section 161 (Engine Controls And Fuel - DTC P0335 To DTC P1182) >> DTC P0420 >> Repair Procedures

Repair Procedures

WARNING: This page is about a different car, the 2007 Saturn Ion Red Line. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: A new converter with less than 100 miles on it may set DTC P0420 due to out-gassing of the internal matting. Operating the vehicle at highway speeds for approximately 1 hour may correct the condition.