LEMON Manuals
: Even more car manuals for everyone: 1960-2025
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Subaru
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2007
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Outback i, Standard
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO)
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1)
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Component Description
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Component Description
Fig 1: Front And Rear Oxygen Sensor Waveform Graph
Courtesy of SUBARU OF AMERICA, INC.
Courtesy of SUBARU OF AMERICA, INC.