Subaru 2002 IMPREZA Service Manual page 436

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
7 CHECK POOR CONTACT.
Check poor contact in drain valve connector.
Check
Is there poor contact in drain
valve connector?
Yes
Repair poor con-
tact in drain valve
connector.
EN(D0HC TURBO)-21 2
No
Contact with SOA
(distributor) ser-
vice.
NOTE:
Inspection by DTM
is required, be-
cause probable
cause is deteriora-
tion of multiple
Darts.