Porsche Forum - Porsche Enthusiast Forums - check engin light after oil change

Ok so my 1999 966 C4 was running fine but I needed to change the oil. So I took it to the local guy and all is fine. 2 days later I get a check engine light. I know these things may not be related but thought I would ask when I remembered that my car took 9.4 QT of oil before the dip still read full. According to the owner’s manual it should be full at 8.6.
So right now if I check my dip stick I am not over full on oil. Also the gage on the consol show that the oil is full but not over full. But the car took more oil than the manual said.
So I guess my question is can over filling oil cause a check engine light?
Any other thought on check engine light as it relates to oil change?