I had this problem on my Escape. I removed the EGR valve and noticed that a piece of trash was stuck in the valve keeping it from closing and causing this vacuum leak. I took a screw driver and opened the valve to remove the trash. This fixed it.
P0401 - EGR flow insufficient , P0402 EGR flow excessive
How do you replace the EGR Valve on a 2001 Ford Escape?
Start by replacing the DPFE sensor. Autozone about $35.00.newtest3
The generic OBDII descriptions are EGR Flow insufficient and EGR Flow Excessive.
P0402 - EGR excessive flow detected
The error code P1401 on a 2001 Ford Escape indicates a malfunction in the Exhaust Gas Recirculation (EGR) system, specifically related to the EGR flow. This code typically points to issues such as a blocked EGR passage, a faulty EGR valve, or problems with the EGR sensor. As a result, the engine may experience performance issues, increased emissions, or rough idling. Addressing this code usually involves inspecting and possibly cleaning or replacing components in the EGR system.
where'sthe egr flow on a 2000 ford expedetion {code; P0401
Diagnostics
excessive gas flow through the EGR valve
Trouble code P0402 means: Exhaust Gas Recirculation Flow Excessive Detected Replace EGR valve
2001 ford windstar has code PO401 erg insufficent flow.
A P0402 error code on a Ford Explorer indicates excessive exhaust gas recirculation (EGR) flow. To fix this issue, first inspect the EGR valve and the connected hoses for any blockages or leaks. Cleaning the EGR valve or replacing it if it’s faulty can help resolve the problem. Additionally, check the EGR passages for carbon buildup and consider replacing the EGR cooler if it’s damaged.