display screen, select the {2. Each System Check} and press the [YES] key.
2. On the display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the display screen, select the {OBD System} and press the [YES] key.
5. On the display screen, select the {Diagnosis Code(s) Display} and press the [YES] key.
6. Make sure that a diagnostic trouble code (DTC) is shown on the display screen.

NOTE: For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.
For detailed concerning diagnostic trouble codes, refer to the List of Diagnostic Trouble Code (DTC).