Subaru Legacy 2003 Service Manual page 1965

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
6 CHECK POOR CONTACT.
Check poor contact in exhaust valve control
duty solenoid valve and ECM connectors.
Is there poor contact in exhaust valve control
duty solenoid valve and ECM connectors?
Step
EN(H4DOSTC)-126
Value
There is poor contact.
Yes
Repair the poor Contact SUBARU
contact in exhaust distributor service.
valve control duty
NOTE:
solenoid valve and
Inspection by DTM
ECM connectors.
is required,
cause
cause is deteriora-
tion of
parts.
No
be-
probable
multiple