Subaru Legacy 2002 Service Manual page 1507

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DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

Engine (DIAGNOSTICS)

CB: DTC P1139 — BANK #1 AND SENSOR #1 OXYGEN (A/F) SENSOR

(FRONT RH) HEATER CIRCUIT RANGE/PERFORMANCE PROBLEM —

¼ DTC DETECTING CONDITION:

¼ Two consecutive driving cycles with fault

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.>.

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