Check engine light on after fueling

[Stayfocus62]

I accidentally didn't tighten my gas cap after refueling and my check engine light came on. I drove it to a nearby Autozone and the code came back that it  was the gas cap. I've been driving the car for the last 3 days and topped off with good premium gas but the light is still on. I contacted a Porsche dealer who advised that it will rest. The question is does anyone know how long it normally takes for the light to disappear? Ty 

[JFP in PA]

5 hours ago, Stayfocus62 said:

I accidentally didn't tighten my gas cap after refueling and my check engine light came on. I drove it to a nearby Autozone and the code came back that it  was the gas cap. I've been driving the car for the last 3 days and topped off with good premium gas but the light is still on. I contacted a Porsche dealer who advised that it will rest. The question is does anyone know how long it normally takes for the light to disappear? Ty 

Welcome to RennTech 

As the code is emissions related, it A may take serveral drive cycles to reset, assuming the cap is OK.

[t6pilot]

Amazon has OBD2 scan tools that will scan and reset codes with smart phones, my buddy has one he paid less than $40 for and it works as advertised

[JFP in PA]

24 minutes ago, t6pilot said:

Amazon has OBD2 scan tools that will scan and reset codes with smart phones, my buddy has one he paid less than $40 for and it works as advertised

 

Just don't expect it to deal with many Porsche codes, which most generic OBD II scanners cannot even see...………..