Catalyst Location
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
TEXT IN ILLUSTRATION
| *1 | Air Fuel Ratio Sensor (Sensor 1) | *2 | Heated Oxygen Sensor (Sensor 2) |
| *3 | TWC: Front Catalyst | *4 | TWC: Rear Catalyst |
| *5 | Center Exhaust Pipe Assembly | *6 | Tail Exhaust Pipe Assembly |
| *7 | Exhaust Manifold Converter Sub-assembly | *8 | Front Exhaust Pipe Assembly |
NOTE:
Replace the exhaust manifold converter sub-assembly (*7) and the front exhaust pipe assembly (*8) together when catalyst replacement is necessary. (Excluding air fuel ratio sensor *1 and heated oxygen sensor *2)