|
Check the codes and get them defined. If the definition is sensor 1 Bank 1 it's the upstream sensor for cylinders 1-3, if the definition is sensor 1 bank 2 it's the upstream sensor for cylinder 4-6, if it's sensor 2 bank 1 it's the downstream sensor for cylinders 1-3, and if it sensor 2 bank 2 it's the downstream sensor for cylinders 4-6. The upstream sensor is the pre catalytic converter sensor and the downstream sensor is the post catalytic converter sensor.
|