I keep getting the code p0401 on my mustang, EGR code. I replaced the DPEF sensor and cleaned out the EGR valve and the tube from the EGR valve (both was very dirty). I drove about 10 miles, and light comes back on, with same code. Could the EGR valve just be bad? Or maybe something elce?
have the same problem?
Thursday, October 28th, 2010 AT 6:11 PM