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Home >> Lexus >> 2021 >> ES 350 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FKS) - Diagnostic Codes (05 Of 10) >> SFI System >> DTC P0420-00: Catalyst System Efficiency Below Threshold Bank 1; DTC P0430-00: Catalyst System Efficiency Below Threshold Bank 2 [06/2018 - 08/2021] >> Catalyst Location
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Catalyst Location

GTY791618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
*1 Air Fuel Ratio Sensor (Bank 1 Sensor 1) *2 Air Fuel Ratio Sensor (Bank 2 Sensor 1)
*3 Heated Oxygen Sensor (Bank 2 Sensor 2) *4 Heated Oxygen Sensor (Bank 1 Sensor 2)
*5 TWC: Front Catalyst *6 TWC: Rear Catalyst
*7 Center Exhaust Pipe Assembly *8 Tail Exhaust Pipe Assembly
*9 Tail Exhaust Pipe Assembly LH *10 Exhaust Manifold
*11 Exhaust Manifold LH *12 Front Exhaust Pipe Assembly
NOTE:
  • If DTC P0420-00 is output, replace the exhaust manifold (*10) and the front exhaust pipe assembly (*12) together when catalyst replacement is necessary (Excluding air fuel ratio sensor*1 and heated oxygen sensor*3).
  • If DTC P0430-00 is output, replace the exhaust manifold assembly LH (*11) and the front exhaust pipe assembly (*12) together when catalyst replacement is necessary (Excluding air fuel ratio sensor*2 and heated oxygen sensor*4).