No chip in the truck. I have wondered if the previous owner had a chip in it but found no evidence. I am starting to lean towards the EBPV issue more after hearing what ya'll are saying. Especially since that is the only consistant code that appears. Question for ya'll too along those lines, the previous owner had a aftermarket/performance exhaust installed on the truck. Could that have any bearing to the problems with the EBPV or possible clogged tube?