What is the code P0420 on a Subaru Forester Outback or Legacy?
2013-2019 Subaru Legacy 2013-2019 Subaru Outback 2011-2016 Subaru Forester 2013-2017 Subaru Crosstrek 2.5L non turbo Front Exhaust Manifold With Integrated Catalytic Converter OEM Grade Federal
49 State & Canada Direct Fit Catalytic Converter
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Open Feb 01, 2025 - 11:29 PM
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Feb 01, 2025 - 11:29 PM
The code P0420 on a 2013 Subaru Legacy signals "Catalyst System Efficiency Below Threshold" for Bank 1, often due to a faulty catalytic converter, such as those found in the 2013 Subaru Outback catalytic converter or similar models. This issue might stem from a defective exhaust manifold with an integrated catalytic converter, oxygen sensor problems, or exhaust leaks. Conducting a diagnostic check will help pinpoint the exact cause, allowing for targeted repairs using OEM-grade components for optimal performance.
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View all 2013-2019 Subaru Legacy 2013-2019 Subaru Outback 2011-2016 Subaru Forester 2013-2017 Subaru Crosstrek 2.5L non turbo Front Exhaust Manifold With Integrated Catalytic Converter OEM Grade Federal Questions & Answers
