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Home >> Pontiac >> 2006 >> G6 Base, 2.4 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.4L - DTC P0351 To DTC P2138 >> DTC P0420 >> Repair Procedures

Repair Procedures

IMPORTANT:
  • Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.
  • A new converter with less than 100 miles on it may set P0420 due to out-gassing of the internal matting. Operating the vehicle at highway speeds for approximately 1 hour may correct the condition.
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