I am having a hard time getting the low EGR flow check engine code to clear. The EGR valve and tube from the exhaust manifold were replaced, the wiring harness verified, the passage channel between the EGR valve and the intake manifold cleaned out…but the check engine light remains…any ideas what t…

2005 Buick Terraza Check Engine Light with low EGR Flow code

cigroller May 5, 2014, 5:46am 2

What is the specific code?

Hopefully you did actually clear the code after the work. Otherwise you have to wait a certain number of drive cycles for the PCM to clear the code.

How was the wiring harness verified?

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