i just pulled the same code a couple days ago. I just installed my cams and it came on after 30min of driving. It went away on its own 2 hours later. It didnt come on again for 1 day then it just came back on. Now it's been on all day.

 

can someone please PM me something that will help me get rid of the p0300 code because i need to pass inspection and with this service light on... I won't! please help anyone.