OBD2 port not working! Could it be a blown fuse?

[chi123]

So today I tried to reset my service reminder light and also change the fuel map to 100 octane since I'm going in for a dyno next week. However, I just found out my OBD2 port doesn't work. A few months ago, I was tapping into the wires at the port for the P3 boost gauge install but ended up using a different source for the power. From then on, I haven't plugged anything into the port and before, it was working fine. Could it be a blown fuse? If so, where would be the location of the fuse? I bought the car used back then and it didn't come with the owner's manual. Thanks in advance!

[Gunnark100]

Passanger side , black fuse carrier fuse nr. 7 5amp.(fuses are marked/written on back of fuse box cover)

Fuses on the passenger's side
Some of the items listed are only fitted on certain models or are
optional extras.
Please note that the following list, while correct at the time of
printing, is subject to alterations. If discrepancies should occur,
please refer to the sticker on the inside of the fuse cover for the
correct information for your vehicle.
The seats with electrical adjustment are protected by circuit
breakers. These reset automatically after a few seconds when the
overload has been corrected.
Fuse list
Fuse list
No. Electrical equipment amps
Fuse carrier (black)
1 Vacant
2 Vacant
3 Vacant
4 Vacant
5 Steering column switch module 5
6 Electronic Stabilisation Program 5
Fig. 285 Diagram of
fuse box (left-hand
drive vehicle)
7 Diagnostic connector 5
8 Gateway (diagnostic interface for data bus) 5
9 Vacant
10 Vacant
11 Vacant
12 Vacant
No. Electrical equipment amps
Fuse carrier (brown)
1 CD drive 5
2 Switch module for Audi drive select 5
3 MMI/Radio 10/20
4 Light switch 5
5 Control unit for instrument cluster 5
6 Ignition lock 5
7 Vacant
8 Air conditioner blower 40
9 Steering column lock 5
10 Air conditioner 10
11 Diagnostic connector 10
12 Steering column switch module 5

[14S4GWM]

The fuse box is right next to the obd port. Why would you splice into that being so close to the fuse box.