Subaru Impreza 2003 Service Manual page 801

The malfunction indicator light flashes code corresponding to faulty parts. The long segment (1.3 seconds
ON) indicates a "ten", and the short segment (0.2 seconds ON) signifies "one". And middle segment (0.5 sec-
onds ON) means OK code.
NOTE:
• For detailed concerning DTCs, refer to the List of DTC. <Ref. to EN(H4SOw/oOBD)-55, LIST, List of Di-
agnostic Trouble Code (DTC).>
(A)
0.5
(B)
(C)
(A) OK code
(B) DTC 13
READ DIAGNOSTIC TROUBLE CODE (DTC)
0.5 0.5 0.5 0.5 0.5
1.3 0.2 0.2 0.2 0.2 0.2 0.2
1.3 0.2 1.3 0.2 0.2
(C) DTC 21
EN(H4SOw/oOBD)-25
0.5 0.5 0.5
1.8 1.3 0.2 0.2
1.8 1.3 0.2 1.3
ENGINE (DIAGNOSTICS)
0.2 0.2 0.2 0.2
(D)
0.2 0.2
(D) Unit: second
EN-01541