Hi Moose, I have a 2016 Hyundai Sonata and my OBD2 is mis...

Hello and thank you for using JustAnswer. My name is \*\*\*\*\* \*\*\*\*\* I will do my best to assist you. During this conversation you will be given an automated offer for a phone call. You may accept or decline that offer.I don’t personally offer this service so if you take this another tech may call I’m sorry that you’re having trouble with your vehicle. I will do my best to help you resolve them. Please understand that I do not know your knowledge or capabilities so I may need to ask questions to find out basic information to help solve your specific problem. My aim is to give you the best service possible and to help you. If you have any questions or concerns, please don’t hesitate to let me know. Sometimes it may take a moment for me to respond because I may have to look up information about your concern. I appreciate your patience and will provide responses as soon as possible. Ok, reduced engine mode/limp in mode with check engine light on can be caused by the electronic throttle control, turbo fault if equipped with the optional turbo engine, transmission control system. If you have a parts store close to you, you can drive to them and they will scan the fault codes for free and tell you the area of concern. If you need a mobile mechanic, you will need to either call one in your area or you can go thru a national mobile mechanic service such as https://wrench.com/ to find one near you Thanks for using Just Answer and letting me help you. I hope I provided what you needed. If you find more help is still needed, let me know by listing out any remaining questions you have on this concern. I hope the remainder of your day is well.

I have tried that with Autozone. my OBD2 is missing.

HI, Ok, the connector is found by the fuse box at left side of dash - you remove fuse panel cover at the dash and it will be there.

I have done that, it is missing.

HI Then some dash work was done as some point and not reattached there and is somewhere behind the left side of the dash. The obd2 connector, if it was cut off or torn off or otherwise removed, would have put it into limp in mode the moment it happened. It is there behind the dash. You will need to remove that lower left dash trim panel to find it.

Ok thanks you for your help!

you are welcome