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Prius Two
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Repair and Diagnosis (Single Page)
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Engine Performance
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Engine Control System (Diagnostic Codes (P00100 - P2402)) (Except Plug-In)
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SFI System
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DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1)
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Typical Malfunction Thresholds
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Typical Malfunction Thresholds
Oxygen storage capacity of catalyst
Less than 0.07 g