Subaru IMPREZA 2002 Service Manual page 595

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Yes
Inspect DTC
PO1 22 or PO1 23
using "List of Diag-
nostic Trouble
Code (DTC)".
<Ref. to
List of Diagnostic
Trouble Code
(DTC).>
NOTE:
In this case, it is
not necessary to
inspect DTC
P1142.
EN(S0HC)-77,
_ _
~~
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
No
Replace the throt-
tle position sen-
sor.
<Ref. to
FU(S0HC)-31,
Throttle Position
Sensor.>
Check
loes the Subaru Select Moni-
or or OBD-II general scan tool
ndicate DTC PO1 22 or PO1 23?
EN(S0HC)-271