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EGR Monitor and Readiness Code: Procedure

  1. Connect the HDS to the DLC.
  2. Start the engine.
  3. Drive at a steady speed, with the transmission in D, at 50-62 mph (80-100 km/h) or above for more than 10 seconds.
  4. With the transmission in D, decelerate from 62 mph (100 km/h) or above by completely releasing the throttle for at least 5 seconds. If the engine is stopped during this step, repeat step  3 and 4.
  5. Check the OBD status screen for DTC P0401 in the DTCs MENU with the HDS.
    • If it is passed, readiness is complete.
    • If it is not passed, go to step  3 and retest.
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