Subaru Legacy 2003 Service Manual page 1999

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
6 CHECK POOR CONTACT.
Check poor contact in ECM and idle air control
solenoid valve connectors.
Is there poor contact in ECM and idle air con-
trol solenoid valve connectors?
Step
EN(H4DOSTC)-160
Value
There is poor contact.
Yes
Repair the poor Replace the idle
contact in ECM air control solenoid
and idle air control valve. <Ref. to
solenoid valve FU(H4DOSTC)-
connectors. 35, Idle Air Con-
trol Solenoid
Valve.>
No