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I have done a little research and see that this code is due to voltage at the sensor being out of range but I don't know where to look for solutions?
I'm also seeing P0300, intermittent miss, I'm guessing this is related to above.
Just returned from a 400 mile road trip and the car ran great. Start up the next day and now this. The first time it happened the miss cleared after driving for a few minutes and ran fine for 15 minutes before turning off. Next start up, took longer to clear, but ran okay after that. Now it won't go away except under full throttle.
I was able to get a basic scan tool and the voltage on one of the O2 Sensors is a constant 1.105 V. Will just swapping the sensor solve this, or is there some other issue?