Catalyst Location
WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. 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 | Front Exhaust Pipe Assembly | *6 | Tail Exhaust Pipe Assembly |
| *7 | No. 3 Front Exhaust Pipe Sub-assembly | *8 | Center Exhaust Pipe Assembly |
| *9 | Exhaust Manifold Sub-assembly RH | *10 | Exhaust Manifold Sub-assembly LH |
| *11 | TWC: Front Catalyst | *12 | TWC: Rear Catalyst |
NOTE:
- If DTC P0420 is output, replace the exhaust manifold sub-assembly RH (*9) and the center exhaust pipe assembly (*8) 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 LH (*10) and the center exhaust pipe assembly (*8) together when catalyst replacement is necessary (Excluding air fuel ratio sensor*2 and heated oxygen sensor*4).