P0401 & P0402 Insufficient and Excessive error on theEGR

Pelzaris · **Joined:** Sun Aug 30, 2009 5:59 pm **Posts:** 1

Have an F-150, 2002 year, 54k miles and just replaced the EGR valve. But still getting errrors for both:
P0401 Insufficient EGR Flow
P0402 EGR Flow Excessive at Idle
What would fix both an insufficient and excessive flow?

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

asecmt · **Posted:** Sun Aug 30, 2009 6:42 pm

Put your old EGR valve back on and go to ford and buy the DPFE sensor and this will take care of it.

kev2 · **Joined:** Sat Aug 29, 2009 4:24 pm **Posts:** 4

agree with above

DPFE

P0401 & P0402 Insufficient and Excessive error on theEGR

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