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2001 Mustang with P0402 Code

Discussion in '1994-2004 V6 Mustang Tech' started by Missileman, Aug 9, 2005.

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  1. Missileman

    Missileman Silver 2001 Convertible

    Aug 8, 2005
    Likes Received:
    Little Rock, AR
    SES light suddenly appeared a few days ago. I took my Mustang to AutoZone. Code P0402 (Excessive EGR at idle)was the only one there. I removed the EGR, but it looked ok....No carbon and it didn't appear to be stuck open.

    After a lot of Internet research in several threads on this board, it appears the DPFE sensor fails much more often than an EGR valve. After replacing the $34.99 sensor (from NAPA), it appears the problem has been resolved. :)

    Thanks everyone. You all do a great job!!