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Isuzu
Rodeo
Trouble Codes
P Codes (Powertrain)
P0400 - P0499
P0401
1999 Isuzu Rodeo Question code P0401
1999 ISUZU RODEO
151,456 MILES • 6 CYL • 4WD • AUTOMATIC
PHOENIX0078
MEMBER
1 POST
FOLLOW
Ihave replaced the EGR valve and continue to get a Code P0401
Oct 27, 2010 at 5:52 PM
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RASMATAZ
CERTIFIED EXPERT
75,992 POSTS
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