Subaru Legacy 2002 Service Manual page 1369

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (DIAGNOSTICS)
V: DTC P0137 — BANK #1 AND SENSOR #2 OXYGEN SENSOR (REAR)
CIRCUIT LOW INPUT —
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(H6)-49,
OPERATION, Clear Memory Mode.> and INSPECTION MODE <Ref. to EN(H6)-46, OPERATION,
Inspection Mode.>.
¼ WIRING DIAGRAM:
No.
1 CHECK ANY OTHER DTC ON DISPLAY.
S048521K01
Step
Does the Subaru Select
Monitor or OBD-II general
scan tool indicate DTC
P1152, P1153, P1154 or
P1155?
EN(H6)-162
Check Yes
Go to step 2.
B2M4746
No
Go to step 3.