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Home >> Toyota >> 2011 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) >> Catalyst Location
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Catalyst Location

Fig 1: Identifying Exhaust Heat Recirculation System
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TEXT IN ILLUSTRATION

*1 w/ Exhaust Heat Recirculation System *2 Exhaust Manifold Sub-assembly
*3 Front Exhaust Pipe Assembly (TWC: Front and Rear Catalyst) *4 Tail Exhaust Pipe Assembly
*5 Air Fuel Ratio Sensor (Sensor 1) *6 Heated Oxygen Sensor (Sensor 2)
*7 w/o Exhaust Heat Recirculation System - -