DTC Descriptions

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2004 Ford RV Cutaway, 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, and 2004 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.

P0401 = EGR Flow Insufficient Detected
P0402 = EGR Flow Excessive Detected
P0403 = EGR Control Circuits
P0404 = EGR Control Circuit Range/Performance
P0405 = EGR Sensor A Circuit Low
P0406 = EGR Sensor A Circuit High
P1335 = EGR Position Sensor Minimum Stop Performance