Subaru 2002 IMPREZA Service Manual page 526

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
CL: DTC P I 131
-
FRONT OXYGEN (NF) SENSOR CIRCUIT MALFUNCTION
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:
(SHORT CIRCUIT)
-
Immediately at fault recognition
MAIN RELAY BATTERY
SBF-5
3 c
EN1143
EN(D0HC TURBO)-302