Subaru 2002 IMPREZA Service Manual page 374

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Y:
DTC DETECTING CONDITION:
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(D0HC TURBO)-
49, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(D0HC TURBO)-46, Inspec-
tion Mode.>.
WIRING DIAGRAM:
DTC PO139
-
REAR OXYGEN SENSOR CIRCUIT SLOW RESPONSE
-
Two consecutive driving
cycles
with fault
41N RELAY BATTERY
EN1 144
EN(D0HC TURBO)-150