» » »

Mercury Q&A

Ask Your Question

2000 Mercury Cougar Question: Check engine light is on

 

Question

npennie66, 2.5L V6, Cullen, VA, February 08, 2010, 08:50
 Rookie

I have been told this could be a "tube" stoped up in the motor. Has anyone had this problem before? The codes are T0420-CAT and t0401 EXTT or EXH GAS

1 Answer
Flag This
  • Answer #1

    Bret Bodas from RepairPal Test Shop, February 08, 2010, 08:53
     Master

    Can you provide us with the code that caused the light to come on? Are yo talking about an EGR tube?

    Flag This
  • Reply

    npennie66, February 08, 2010, 11:22
     Rookie

    The codes are T0420 and T0401

    Flag This
  • Reply

    Bret Bodas, February 08, 2010, 11:39
     Master

    The P0401 code can be from a plugged EGR tube or port, however I don't know if that will cause the P0420 code. Here is some info for both of the codes:
    http://repairpal.com/OBD-II-Code-P0401
    http://repairpal.com/OBD-II-Code-P0420

    Reply
    Flag This