Subaru FORESTER 2001 Service Manual page 295

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (Diagnostics)
CD: DTC P1139 — FRONT OXYGEN (A/F) SENSOR #1 HEATER CIRCUIT
RANGE/PERFORMANCE PROBLEM —
S088521B97
¼ DTC DETECTING CONDITION:
¼ Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(DOHC TURBO)-
47, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(DOHC TURBO)-44, Inspec-
tion Mode.>.
¼ WIRING DIAGRAM:
S2M2187
EN(DOHC TURBO)-294