Yesterday I got a CEL...code is P0131 (Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low Voltage). I plan to change the oxygen sensor this weekend, however, I am having another issue and im not sure if its related to an O2 sensor malfunction...When at a stop, the idle dips down VERY low, low enough so that the car is barely staying on (I notice this especially when the outside air is warm). Someone told me to clean out the EGR valve, however i was wondering if anyone has any other idea or if the O2 sensor problem is related to this. Thanks in advance

 

could be a few things... fix the CEL then go from there

 

Goodluck getting that off also.
Lots of PB blast and a o2 socket will more than likely be needed.