My 01 Caravan (3.3L 6 cyl) had error codes p0442 and 0455. Smoke test showed fuel filler neck to be leaking. I had that replaced and now I have those same codes PLUS now p0401. I have not driven the car more than 15 miles yet. I was wondering if the new filler neck triggered the 0401 code by causing there to be a difference in vacuum (or anything else that may be detected as a change) than the van sensors are accustomed to and hopefully will go away after a few drive cycles or should I now be looking for a problem with the EGR?
have the same problem?
Friday, October 5th, 2012 AT 11:44 AM