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Scion
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2012
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xB Automatic Trans
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Control System (Diagnostic Codes (P0420-P1605))
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SFI System
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DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1)
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Monitor Result
Monitor Result
Refer to Checking Monitor Status. Refer to
CHECKING MONITOR STATUS
.