well i just pulled the code for my check engine light and it came out to be a faulty O2 sensor, front right. well this was last week and this week i was trying to get some more miles out of a tank of gas and have been driving like a granny everywhere. only thing is i got about 100 less miles than usual. do yall think its from the O2 sensor alone or maybe more like what all these other posts related to mileage are saying.

 

Yes, the ECU reads from the O2 sensors during a closed loop (Part throttle) reading so you're mileage will be low if you have a faulty O2 sensor.

 

get a walker one off ebay