Ok I got a check engine light, I just got the car bought it from a friend, anyways my friend told me he lost the gas cap when he got gas he forgot to put it on and thats when the check engine came on, it has a gas cap now, but just one that he had in his garage, the code that I got when I tested was 41 which is air fuel ratio, so I want to know if I buy the stock or oem gas cap will the check engine go away? I reset the ecu once to see how long it would take to turn back on it was about 130ish miles. So please help if you can thanks in advance.

 

Well does anybody know if this code is the primary o2 sensor, or is it the secondary one? im getting a new gas cap today then Im going to reset the cel if it comes back then I guess it is the o2 sensor.

 

Ok I forgot my uncle had a code reader so I got it scan for codes and got one which was P0134 which is the primary o2 sensor correct? the one before that cat? Let me know thanks

 

DTC P0134: A/F Sensor (Sensor 1) No Activity Detected

 

So Can I just replace the sensor to fix it? Because I noticed the cel will come on after awhile it goes off, so im thinking the sensor is going out or maybe the wiring. Anybody have any experience with this?