I have 2000 GT my car has problam is drank a lot of fual and chack engine light on I chack my car with computer the mistak was on O2 sensor code P1131 lean on HO2S11
Now i want know whice sensor is not works
Is there 4 sensor 2up and 2down..

 

I would try an O2 sensor first. Then try getting spell check.