I have about 40K on my X. Twice, during the past week, the "service engine soon" light has come on. Both times, I have tried to read the embedded code with my reader, but it doesn't find any. I can erase whatever code is stored with my reader. I'll probably have to take it in to the dealer.

Question......does Nissan use proprietary codes on some of the error codes, which would require taking the vehicle into the dealer, or purchasing a expensive reader?