Subaru Legacy 2003 Service Manual page 2067

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
6 CHECK POOR CONTACT.
Check poor contact in ECM and relief valve
control solenoid valve 2 and ECM connectors.
Are there poor contact in ECM and relief valve
control solenoid valve 2 and ECM connectors?
Step
EN(H4DOSTC)-228
Value
There are poor contacts.
Yes
Repair the poor Contact SUBARU
contact in ECM distributor service.
and relief valve
NOTE:
control solenoid
Inspection by DTM
valve 2 and ECM
is required,
connectors.
cause
cause is deteriora-
tion of
parts.
No
be-
probable
multiple