Pinpoint Test C: DTC P1450 Excessive Vacuum Detected In The Fuel Tank
WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, 2004 Ford Excursion, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Condition P1450 DTC set: More than -1.79 kPa (-7.2 inches H2
O) over 30 seconds.