With Manufacturer's Scan Tool

CLEAR DTC

a. Connect the intelligent tester or Techstream to the DLC3.
b. Turn the ignition switch ON.
c. Turn the tester on.
d. Enter the following menus:
1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO.
2. Techstream - Select: Powertrain / Engine and ECT / Trouble Codes.

e. Erase the DTCs.