Select the Diagnostic Trouble Codes tool from the tool selection combobox.
Click the "Erase Codes" button.
A warning will pop up. Click "Yes" to confirm your actions and continue.
NOTE: This will clear all diagnostic information stored on
your vehicle. If you did not correct the problems indicated by the cleared
trouble codes, then the codes will more-than-likely return. Also, your vehicle
may run poorly for a short time as it recalibrates itself.