Engine Compartment/Exhaust System

The upstream sensor (1/1) is located just before the main catalytic convertor.

The downstream sensor (1/2) is located just after the main catalytic convertor.

The right upstream sensor (2/1) is located in the right exhaust downpipe just before the mini-catalytic convertor.

The left upstream sensor (1/1) is located in the left exhaust downpipe just before the mini-catalytic convertor.

The right downstream sensor (2/2) is located in the right exhaust downpipe just after the mini-catalytic convertor, and before the main catalytic convertor.

The left downstream sensor (1/2) is located in the left exhaust downpipe just after the mini-catalytic convertor, and before the main catalytic convertor.