What does OBDII code P1459 in a Ford Escape mean?

OBDII code P1459 in a Ford Escape indicates a problem with the evaporative emission control system, specifically related to the fuel tank pressure sensor or its circuit. This code typically suggests that the fuel tank pressure is outside the expected range, which can be caused by a faulty sensor, wiring issues, or a leak in the EVAP system. It's important to diagnose the exact cause to prevent potential fuel vapor leaks and ensure the proper functioning of the vehicle's emissions system.