Question about 2000 Oldsmobile Silhouette
Service engine light on code is P1404
EGR valve pintle stuck open, which in most cases is a false alarm. But as a precaution just replace the EGR valve
Posted on Oct 03, 2009
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Posted on Jan 02, 2017
SOURCE: Service engine light comes on
This GM's definition of this code:
P1404 - Exhaust Gas Recirculation (EGR) Closed Position Performance
The most common reasons are either the EGR valve position sensor is defective, or the EGR valve is not fully closed due to carbon.
Posted on Dec 23, 2008
there are a couple of things, first make sure there are not restriction in the exhaust, i know the dealer has had to replace converters under warranty because of this problem, then theres a reflesh program for the computer due to this problem, and lastly,run with egr off make sure it clean of carbon,carbon gets stuck in pintle sets check eng lightbut carbon then blows by so when you remove egr you see nothing, well start with these good luck.
Posted on Nov 28, 2009
You can reset it with a scanner through the diagnostic port or you can disconnect the battery negative cable for 5 minutes or pull the ECM 1 and 2 fuse for 5 minutes.
Posted on Jun 16, 2011
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