Exhaust Emission Control System
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Operation and required maintenance of the exhaust emission control devices used on this engine is covered in the diagnostic, emission, and powertrain control system articles. Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) (SECTION 0) .