I am having problems with my o2 sensors they code 131 and 151 which is low voltage . my question is what would cause low voltage to them because it happens even with new sensors so it has to be something before the sensors . any help would be great .thanx[sm=badbadbad.gif]

 

You could have a bad ground or a bad feed from the computer.

 

Computer is seeing low bias voltage. Sent you PM with diagnostic procedure.

 

thanx for the help guys i let ya know what i find....

 

oh by the way its a 2001 ss with 50k on it no problems other than this and it only happens from time to time i can reset the codes and it will be fine sometimes for weeks sometimes for days ,even with new sensors.