I’ve got a p0171 and p0300 happening and can’t for the life of me figure out why!! What I’ve done I’ve checked wiring integrity Powers and grounds I’ve induced rich and lean conditions where the 02s react accordingly Smoke test for vacuum leaks Relative compression=pass Changed b1s1 02 =still getting system to lean +33 long term fuel trims bank one The misfire happens on bank 2 after the pcm cuts power to the b2s1/b2s2 power so they sit at 0 Volts on the signal return!! Next weird thing is the iat has zero volts on the day pid but there is infact voltage present 3.3v to be exact!! And when unplugged no mil light thrown No codes other then the previously mentioned ones Also when all this starts happening after reaching operating temp the PW to #injector goes from 2000+/- to 300u and all the rest stay up in the 2k range
I’m leaning towards pcm to my knowledge all Of the above mentioned is controlled via pcm
Any and all help would be most appreciated Here’s a shot of injector pulse width at 300 after the issue starts after 10 min or so Here is the shot of the bank 2 02 reporting zero info after 10 minutes of running fine and working fine
