Find the OBD-II Diagnostic Port

The second-generation Kia Niro (SG2, built from 2021 onwards) carries a standard 16-pin OBD-II diagnostic connector, so any generic code reader, Bluetooth dongle or workshop scan tool will plug straight in. The socket lets you read and clear fault codes, watch live sensor data and check emissions readiness across the Niro’s hybrid, plug-in hybrid and EV variants. Best of all, it sits within easy reach beneath the dashboard, so you can find and use it without unclipping trim or reaching for tools.

OBD-II Port Location

On the SG2 Niro the diagnostic socket is on the driver’s side, tucked up under the lower edge of the dashboard close to the fuse panel. Sit in the driver’s seat, look down towards your right knee (or left knee on a left-hand-drive car) and the connector faces downwards near the bottom of the fascia, roughly in line with the steering column and just below the row of fuses. It is not hidden behind a screwed-on cover, though on some cars the connector is initially clipped or taped up out of sight behind the fuse panel and simply needs to be pulled down into its open slot. Once located it is easy to reach by hand.

Before You Plug In

• Park on level ground, apply the electronic parking brake and make sure the car is in Park before you lean under the dash.
• Have a torch or your phone light ready, as the footwell is shaded and the socket faces down.
• Switch the ignition off while you connect, then turn it to the ON position (or press start without pressing the brake) so the modules wake up.
• Check your reader supports CAN, which the Niro uses, and remember that on the EV and hybrid there is no engine idle to listen for, so rely on the dash for confirmation the system is live.

How to Access the Connector

1. Open the driver’s door and, if you like, slide the seat back for a clearer view of the lower dash.
2. Crouch or kneel by the door sill and look up under the fascia towards the fuse panel area.
3. Locate the trapezoidal 16-pin socket facing downwards; if the slot appears empty, feel for the connector clipped just behind the fuse cover and draw it forward.
4. Line up your scan tool the same way round as the port and push firmly until it seats, then power up the tool.

Tips for Safe Use

• Insert and remove the plug straight, without rocking it, to protect the delicate pins.
• Unplug any dongle before leaving the car for a long period, as a permanently connected device can slowly drain the 12 V battery.
• Do not drive while distracted by a live-data screen; if you need to log data on the move, have a passenger watch it.
• Keep the connector clean and dry, and never force a tool that will not seat, as a bent pin can disrupt communication.

Frequently Asked Questions

Where is the OBD-II port on a 2021-present Kia Niro?

It is under the dashboard on the driver’s side, near the lower edge by the fuse panel, roughly in line with the steering column and facing downwards. Look up under the fascia from the driver’s footwell and you will find the 16-pin socket within easy reach.

Why can’t I see the OBD-II socket in my Niro?

On some SG2 Niros the connector is left clipped or taped behind the fuse panel from the factory and the visible slot looks empty. Reach behind the fuse cover, find the connector and pull it down into its slot so a tool can be plugged in.

Does the Kia Niro EV have the same OBD-II port as the hybrid?

Yes. All SG2 Niro variants, including the hybrid, plug-in hybrid and full EV, use the same standard 16-pin OBD-II connector in the same driver’s-side location. What differs is the data available, since the EV reports battery and drive-motor information rather than engine parameters.

Can I leave a Bluetooth OBD-II adapter plugged into my Niro?

You can for short periods, but for the long term it is better to unplug it. A dongle that stays awake can slowly draw down the 12 V battery, which on a hybrid or EV also supports the car’s wake-up electronics.

If a fault code appears once you are connected and you want to understand what it means before booking any work, look it up on autodtcs.com.