Subaru Legacy 2002 Service Manual page 1348

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK ANY OTHER DTC ON DISPLAY.
Step
Is there any other DTC on
display?
EN(H6)-141
Check Yes
Inspect the rel-
evant DTC using
"List of Diagnostic
Trouble Code
(DTC)". <Ref. to
EN(H6)-87, List of
Diagnostic
Trouble Code
(DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P0121.
Engine (DIAGNOSTICS)
No
Replace throttle
position sensor.
<Ref. to FU(H6)-
33, Throttle Posi-
tion Sensor.>