EGR Monitor and Readiness Code

NOTE: 

• During the procedure, do not turn the vehicle to the ACCESSORY mode or the OFF (LOCK) mode.
• All readiness codes are cleared when the 12 volt battery is disconnected, if DTCs have been cleared, or if the PCM is reset with the HDS.

Enable Criteria 

ECT SENSOR 1 at 176 °F (80 °C) or more.

Procedure 

1. Connect the HDS to the DLC. Connect The HDS 
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 steps  3 and  4.
5. Check the OBD status screen for DTC P0401 in the DTC's MENU with the HDS.
   • If it is passed, the readiness code is complete.
   • If it is not passed, go to step  3and retest.