over boost?
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
<TABLE cellSpacing=0 cellPadding=0 width="80%" align=center border=0><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="HEIGHT: 12.75pt" height=17>P1670</TD><TD>EF Feedback Signal Not Detected</TD></TR></TBODY></TABLE>
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Without any kind overboost regulator, the PCM will set the overboost code at about 22psi. But once it's set, it stays on until you shut the truck off. The ICP code causes a CEL for 2 mins, then shuts off. I get that one all the time. If yours is flickering, you have something else going on...
