Nissan Repair: Infiniti Q45 4.5 L 1994, infiniti q45, diagnostic device
QuestionCan I pull codes myself for check engine light or do I have to take it to a shop
AnswerHi Pete -
The only way you can retrieve check engine light codes is with an OBD (On Board Diagnostic) device.
If you have an Autozone near your area, I think they will do it for free.
The OBD readers have gone down in price the last few years, I think you can get one now for a little over a hundred dollars.
Hope this helps -
aloha
Calvin