I have two fault codes, P0302, P0420
P0302 is cylinder 2 not contributing. I could be a bad spark plug or injecor.
P0420 is catalytic converter issue. I could be because of the cylinder 2 failure.
this is caused by a vacuum leak, a vapor lock issue. this should be flagged as I believe all 1996 and 1997 possible 1998 pathfinders are going to have this problem. a P0302 #2 cylinder misfire w/secondary code of P0325 knock sensor. before replacing injector 2, wires , plugs, etc.. check the vacuum line above rear drivers side tire, small hose from charcoal canister up over the shock to the purge valve.The rubber hose from the canister connects to a metal hose then the metal hose connects back to a rubber hose to the purge valve. The METAL hose corrodes and leaks causing a #2 misfire for a small amount of time when warm started. pass this on few mechanics know of this. you will see the metal corroded.
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