Update on the check engine light.

I think I fix the problem. When the fuse Number 7 blown due to a bad fuse not a short circuit, it created a check engine light DTCs #5 and #21 because the power supply to EGR system was interupted. I replaced the same fuse but the check engine light was not go away. When I reset the code by holding the switch for 8 seconds after reading each code, I did not turn off the key so the LED is still flashing with the same codes. Today, checking the DTC again, there is no faulty code. I test drive and no check engine light on. I did not know that I have successfully reset the code and no thing wrong with the car. The one lesson learn from this is after reset the code, turn off the key to to reset the check engine light. Thanks for giving me good advices.