With Manufacturer's Scan Tool
Reading the DTC1. Make sure the ignition switch is OFF.
2. Connect the Honda PGM Tester (A) or the HDS to the DLC (B).
3. Turn the ignition switch ON (II).
4. Use the Honda PGM Tester or the HDS to check for DTCs.
5. Read the DTC.
6. Turn the ignition switch OFF, and wait for 10 seconds.
7. Disconnect the Honda PGM Tester or the HDS from the DLC.