Code 1 on 91 hatch 10psi
 

I keep geting code one is the O2 sensor i ting, and i only use 100 racing fuel is it normal becouse the type of fuel any one have these problem before.

Re:Code 1 on 91 hatch 10psi
 

yeah its the o2 sensor, check it out, if it still does it try regular fuel

Re:Code 1 on 91 hatch 10psi
 

you probably messed it up running 100oct all the time.

Re:Code 1 on 91 hatch 10psi
 

There is nothing wrong with the 100oct. gas. Its only the leaded high oct. gas that will kill O2 sensors.
My O2 sensor is the same way, but it only throws the lean code when I let it idle for a while.. I'm going to try and replace the O2 since I have ran 2 tanks worth of 116oct. leaded gas though it..

Re:Code 1 on 91 hatch 10psi
 

94 Pump gas...
No check codes.