Without Scantool

DTC CLEAR

a. The DTCs and freezed frame data will be erased by either action.
Opening the OBD II scan tool (complying with SAE J1978) or LEXUS hand-held tester to erase the codes. (See the OBD II scan tool's instruction book for operating instructions.)

b. Remove the EFI fuse from engine room J/B for 10 seconds or more.