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Repair Verification

WARNING: This page is about a different car, the 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  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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