Help!!!!I have error code p0401 on my 2001 Lincoln ls. The machanic changed the EGR valve and the solenoid. I drove 20 miles and the check engine light came back and so did code p0401. I'm at mt wits end. The car is not acting up but I cant get my inspection sticker. What could be the problem before I take it back. I read the forum and found out about the clock spring. It was dead on the money. Please help.