OBD2 connector no power

[1738]

Hello gentlemen, my mechanic says there is no power to my OBD2. He tried it when the car idling. Does the car absolutely need to be in accessory power mode? Is there a fuse we should check? If yes, which one and where is it located?
Thank you in advance.


2017 mustang gt PP

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[2017GBGTPP]

Here is the fuse layout from the Workshop Manual. I would check the PCM power relay at F22, that sounds like it could be it:

 

[tokuzumi]

While we all have our off days, if the mechanic hasn't checked to make sure the fuse for the OBD2 is good, find a new mechanic.

And yes, a scanner won't be able to do much of anything if the ignition is not in run mode. Engine doesn't have to be running.

 

[Cobra Jet]

Does the car have a tune?

 

[1738]

No tune. It cost a few bucks but he fixed it. I don’t know what he did.

 

[1738]

Thanks for the help everyone

 

[frank s]

I'm calling up images of the old trick of squirting oil on a shock absorber and selling new ones.

 

[tokuzumi]

Does your mechanic know what he did to fix it?

 

[1738]

Yes , but unfortunately I didn’t ask.

 

[Canoman]

Yes , but unfortunately I didn’t ask.

Oh man... I have this issue on my 2017 now, too. Wish you'd found out! I've replaced a fuse and no luck. Still trying.

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