Catalyst Location
WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
| *1 | Air Fuel Ratio Sensor (Bank 1 Sensor 1) | *2 | Air Fuel Ratio Sensor (Bank 2 Sensor 1) |
| *3 | Heated Oxygen Sensor (Bank 1 Sensor 2) | *4 | Heated Oxygen Sensor (Bank 2 Sensor 2) |
| *5 | TWC: Front Catalyst | *6 | TWC: Rear Catalyst |
| *7 | Front Exhaust Pipe Assembly | *8 | Tail Exhaust Pipe Assembly |
| *9 | Tail Exhaust Pipe LH | *10 | Exhaust Manifold Sub-assembly RH |
| *11 | Exhaust Manifold Sub-assembly LH | - | - |
NOTE:
- If DTC P0420 is output, replace the exhaust manifold sub-assembly LH (*11) and the front exhaust pipe assembly (*7) together when catalyst replacement is necessary (Excluding air fuel ratio sensor*1 and heated oxygen sensor*3).
- If DTC P0430 is output, replace the exhaust manifold sub-assembly RH (*10) and the front exhaust pipe assembly (*7) together when catalyst replacement is necessary (Excluding air fuel ratio sensor*2 and heated oxygen sensor*4).