Which one of these fuses powers the OBD power pin?

 

Can we have vehicle year and model, thanks.

 

Curious how it was determined to not have power?

Do you have a simple test light or voltmeter?

 

It's an Elantra, 2.0L FWD SE Sedan, manual trans.

My OBD didn't power up from the OBD port so I connected an OBD breakout box ( ) to it and found zero volts on the power pin.

 

 

I found the problem. When I installed the Schumacher Memory Saver and disconnected the battery, the cabin “1 MEMORY” fuse blew, undoubtedly because the OBD/memory saver’s power pin tried to power the car and exceeded the 10 amp fuse limit. The memory saver should have a current limiter. This solved a handful of other issues with the instrument panel that I haven’t mentioned. And the OBD's power pin now has power. All is good now.

 

Glade you figured it out.

 

For what it is worth,
Suggest investing in a decent test light available from most auto supply stores like NAPA,Advance, etc.
You can check all fuses in less that 2 minutes without pulling any fuses. That way you can have an answer in a short time if any fuse is protecting any circuit and might be open.