If anyone has information my car started doing this about a week ago the check engine light came on and the computer read low volt 02 sensor bank1 senor1 so i disconnects my air fuel gauge thinking it was the problem now the engine light came on again havent checked the code yet but the car missfires alot. if anyone has an idea how to fix this please let me know thanks.

 

what was the exact code it gave? P0401...

 

not to sure but advance auto is the checker i used and knowing the af gauge was working weirdly i knew something was up the print out said low voltage o2 sensor
bank 1 sensor 1