» » »

Mercury Q&A

Ask Your Question

2002 Mercury Cougar Question: OBD Code P0340? Again?

 

Question

remy2584, 2.5L V6, Columbia, MD, September 13, 2011, 06:21
 Rookie

My CEL came on sometime in August, around a month after I get my Transmission replaced (under warranty, I'm lucky). Pulled the code, P0340. Had the CPS replaced. Cleared the code. Light came on again. Same code. What do I do now?

1 Answer
Flag This
  • Answer #1

    September 13, 2011, 07:29
    Profile_thumbnail
     Master

    most likely a DPFE sensor failure. Ford had issues with these sensors causing 340 code.

    Roy

    Flag This
  • Reply

    remy2584, September 13, 2011, 07:32
     Rookie

    Already? I had the EGR Valve replaced a year ago. Sensor should've been replaced as well.

    Flag This
  • Reply

    mastertech6371, September 13, 2011, 07:42
    Profile_thumbnail
     Master

    no, it does not mean it was replaced unless you were specifically charged for it. do you have the receipt??
    it is not part of the egr.

    Roy

    Flag This
  • Reply

    remy2584, September 13, 2011, 08:14
     Rookie

    Yes, the DPFE sensor and EGR valve were replaced.

    Flag This
  • Reply

    mastertech6371, September 13, 2011, 08:34
    Profile_thumbnail
     Master

    ok, you need a shop to check this system, a good shop that can use a scanner and be able to find the malfunction. from here, it is tough to determine the failure without seeing it in person.
    wish I could be more help, but it is difficult to diag from a distance.

    Roy

    Reply
    Flag This