Subaru IMPREZA 2004 Service Manual page 33

OBD-II General Scan Tool
ENGINE (DIAGNOSTICS)
4. MODE $03 (EMISSION-RELATED POWERTRAIN DIAGNOSTIC TROUBLE CODE (DTC))
Refer to Read Diagnostic Trouble Code (DTC) for information about data denoting emission-related power-
train DTC. <Ref. to EN(H4SO)(diag)-39, Read Diagnostic Trouble Code (DTC).>
5. MODE $04 (CLEAR/RESET EMISSION-RELATED DIAGNOSTIC INFORMATION)
Refers to mode used to clear or reset emission-related diagnostic information (OBD-II trouble diagnostic in-
formation).
NOTE:
Refer to OBD-II general scan tool manufacturer's instruction manual to clear or reset emission-related diag-
nostic information (MODE $04).
EN(H4SO)(diag)-31