LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Engine Controls - 3.9L - DTC P0011 To P0420) >> DTC P0300-P0306 >> Repair Verification

Repair Verification

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

If the customer concern was a flashing MIL, perform the following procedure:

  1. Operate the vehicle at 2,500 RPM for 4 minutes.
  2. Operate the vehicle within the Conditions for Running DTC P0420. Refer to DTC P0420 .
    • If DTC P0420 does not run and pass, diagnose that DTC.
  3. Clear the DTCs with a scan tool.
  4. Turn OFF the ignition for 30 seconds.
  5. Start the engine.
  6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
    • If the DTC fails this ignition, a misfire still exists.
scientia non olet · About LEMON Manuals