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Home › Saturn › 2009 › Sky Red Line, Standard › Repair and Diagnosis › Engine Performance › System › Engine Controls And Fuel - 2.0L - DTC P0243 To DTC P0690 › DTC P0420 › Repair Verification

Repair Verification

  1. Clear the DTCs.
  2. Operate the vehicle within the Conditions for Running and Setting for at least 10 minutes
  3. Stop the vehicle.
  4. Engine OFF, allow the ECM to power down.
  5. Operate the vehicle within the Conditions for Running and Setting for at least 10 minutes. DTC P0420 should run and pass.
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