LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Control System - 4.4L - DTC P0196 To P0496) >> DTC P0420 or P0430 >> Repair Verification

Repair Verification

WARNING: This page is about a different variant/trim than selected.
  1. Clear the DTCs.
  2. Allow the engine coolant temperature to reach 70°C (156°F).
    • Place the gear selector in Park (Neutral for manual).
    • Set the parking brake.
  3. Press and hold the service brake.
  4. Run the engine for 6 minutes at 2,500 RPM.
  5. Allow engine speed to return to idle speed, then place gear selector into Drive, or apply clutch pedal for manual.
  6. After 2 minutes verify that DTC P0420 or DTC P0430 have passed or failed this ignition cycle.
    • If not passed or failed this ignition cycle, the test aborted resulting in an inconclusive test result. The above test may need to be repeated up to 5 more times during this drive cycle. The first test should be run after the initial warm up period of 6 minutes. Between subsequent tests maintain 2,500 RPM for 2 minutes.
  7. 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 procedure a second time.
scientia non olet · About LEMON Manuals