Hello i have had a check engine light for a while. Replaced coils, wires, and plugs thinking that was the issue because they had about 20k miles on them. Check engine light went off because battery was disconnected. A couple days later check engine light came on so i ordered a obd2 blutooth dongle but and the lights went on but it would read any codes! Went to autozone and there obd2 reader was unable to pull codes either. Wondering what could this possibly be, it has power but just doesnt work. Replaced fuses and still nothing. Any ideas? Thanks

 

So there are only 5 pins in particular that are used when pulling codes from the obd2 port:



Although the power pin may be working, i would check the other pins. Crouch down and take a look at the obd2 port and make sure that there is no damage or corrosion. Also if you can, take a look at the back and make sure no pins have broken off or popped out

 

Alright thank you! I will take a look. If pins are broken what are my options in terms of repair/replace?