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Home >> Saturn >> 2006 >> Ion Red Line >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - DTC P0341 To DTC P1680 >> DTC P0420 >> Repair Verification
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Repair Verification

  1. Operate the vehicle within the Conditions for Running the DTC.
  2. Verify if DTC P0420 has passed or failed this ignition cycle with the scan tool.
  3. If 6 tests have been attempted and the DTC has not run or passed during this key cycle, turn the key to OFF for 30 seconds, then run the test a second time.
  4. A maximum of 12 tests per key cycle will run if each test is a combination of passed, failed, or aborted tests.
    5. IMPORTANT: DO NOT touch the accelerator, the HVAC, or the steering wheel while a catalyst test is in progress.
  5. After a code clear, the catalyst test will run once if the test is a pass.
  6. Allow the engine to return to a stabilized idle. Keep the vehicle in DRIVE.
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