P0411 problem
#1
P0411 problem
I have installed a new check valve, secondary air pump and relay. I was getting the codes po410 and po411 now just po410. I also repaired a broken wire on the wiring harness by splicing with electrical connectors. What else could be the issue?
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99silver
Silverado & Fullsize Pick-ups
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February 2nd, 2008 4:14 PM