I had a CEL (P0171) recently. After checking engine, there was way too much crap (leaves etc) in airbox trap. There was also a hole in vacuum hose that connects to the intake manifold on top. I just trimmed the end a little and put it back on. For now it seems to be working. I would like to replace it however with a new hose. Does anybody happen to know what kind of hose that is? (part #, size, length etc). Thanks.

 

If its like most of the hoses used, its 6mm