Exhaust Gas Recirculation (EGR) System Slow Response Monitor - Transit
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2019 Ford Transit-350 HD, 2019 Ford Transit-350, 2019 Ford Transit-250, 2019 Ford Transit-150, and 2019 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The EGR system slow response is detected using the EGR rate system monitor. For additional information, refer to the EXHAUST GAS RECIRCULATION (EGR) RATE SYSTEM MONITOR in this article.