I have been getting intermittent P codes concerning the front O2 sensor. Occasionally it throws a cat sensor code, but rarely. It is only P0154 (Circuit Insufficient Activity Bank 2 Sensor 1) 95% of the time but occasionally throws other codes related to that sensor ALONG with P0154. Whether it is one code or a few, they trigger at the same time. After clearing I might not see it again for minutes or for several days.
Today it did throw a P0174 (Fuel Trim System Lean Bank 2) along with the other codes relevant to the front sensor. I did replace this sensor (with a cheapy) about 2k miles ago just as preventative maintenance while I was doing other work. However I am wondering if this is an injector issue with that bank?
Engine runs damn near perfect, once in a great while I can barely detect a little lapse in power, like a misfire but very subtle. I have spare injectors, maybe I should just swap them out one at a time and drive until the codes stops? So... sensor or an injector, anyone think that anything else is at play here?
Today it did throw a P0174 (Fuel Trim System Lean Bank 2) along with the other codes relevant to the front sensor. I did replace this sensor (with a cheapy) about 2k miles ago just as preventative maintenance while I was doing other work. However I am wondering if this is an injector issue with that bank?
Engine runs damn near perfect, once in a great while I can barely detect a little lapse in power, like a misfire but very subtle. I have spare injectors, maybe I should just swap them out one at a time and drive until the codes stops? So... sensor or an injector, anyone think that anything else is at play here?