Subaru 2002 IMPREZA Service Manual page 530

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DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)

ENGINE (DIAGNOSTICS)

CN: DTC P I 139

FRONT OXYGEN (NF) SENSOR #I HEATER CIRCUIT

DTC DETECTING CONDITION:

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:

RANGUPERFORMANCE PROBLEM

Two consecutive driving cycles with fault

EN(D0HC TURBO)-306

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