1999 Isuzu Rodeo Question code P0401

1999 ISUZU RODEO
151,456 MILES • 6 CYL • 4WD • AUTOMATIC
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PHOENIX0078
  • MEMBER
  • 1 POST
Ihave replaced the EGR valve and continue to get a Code P0401
Oct 27, 2010 at 5:52 PM
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RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Hi Phoenix0078, Welcome to 2carpros and TY for the donation

A code P0401 most likely means one or more of the following has happened

There is a blockage in the EGR (tube), most likely carbon buildup
The EGR valve is faulty
The EGR valve may not be opening due to a lack of vaccuum
Oct 27, 2010 at 7:04 PM
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