The 2013 Ford Explorer oxygen sensor is situated on the exhaust at the exhaust system. There is really two or three sensor on the vehicle</br> alongside the admission. The oxygen sensor is intended to gauge how much O2 in the motor and is liable for ensuring the motor is moving along as expected. This works by ensuring the vehicle isn't running rich or lean</br> as when it is the motor needs to work harder or is workaholic behavior to make how much energy it necessities to run. This will additional time make harm the vehicle</br> so in the event that You get this issue</br> You really want to take it to the shop and have the sensor changed out.