On my girlfriend ‘s vehicle I recently scanned it because the check engine light came on and it had the P0 300 302 and 304 codes as well as the P0420 codes. I have replaced the spark plugs, the coil packs both catalytic converters the upstream or bank one sensor 102 sensor as well as the crank position sensor. And I was cleaning the throttle plate on it and now it’s giving me a code P0123 on top of it it’s no longer giving me a stored code or pending code for the P0420. however, it is still running rough and it’s giving me a pending P0304 and 30302. once in a while, but almost always a code 304. just looking for some help on that and maybe how to get it to relearn the position of the throttle it says voltage high.
Feb 24, 2025 at 4:16 PM
