I was thinking of getting the same code scanner but was waiting to see if the light came back on, in my case. The dealer also had an issue with me installing a K&N air filter so they replaced it when they test the gas and reset the light. K&N guarantees their filter so I open a claim with them. I ran the X3 for 5 weeks using good gas and factory filter then put the K&N filter back in. It's been over 8 weeks now and the light is still off. K&N said they would pay my bill and refund the filter cost if it made the service engine soon light come back on.