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Check engine light on for the 3rd time!

Car: Subaru, Legacy, 2001     -    Back to Fix-It    -    Subaru Legacy Repair Manuals

Q.subaru legacy gt 2001, check engine light on for the 3rd time since april. first time they said it was the catalytic converter, second time the oxygyn sensor. so we replaced them, now its on again and the code below came up? please help me. they also said it may be running rich?
catalyst system
efficiency below
threshold (bank 1)

More Info required HI there! So you have had the converter replaced already?

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