ef hatch. under 5% throttle im reading no voltage off of my o2 sensor. anything over 5% it works just fine. its throwing codes onme tho because of it. (code 1 o2 sensor). sucks when im crusing onthe freeway and it reading nothing and starts screwing w/ my ecu because of it. could this be a bad connection, o2 sensor etc? onlything i have spliced off the o2 line is the safc.

 

fixed, was a bad connection. ran a new wire from o2 to ecu solved everything. reading voltage at idle now