These instructions apply to the Hyundai i30 Mk3 (PD) 2017-Present.
For other models, please choose your vehicle here.
The third-generation Hyundai i30 (PD), built from 2017 to 2021, is equipped with a standard 16-pin OBD-II diagnostic socket, the same connector fitted across the industry. That means any generic code reader, Bluetooth adapter or professional scan tool plugs straight in without a Hyundai-specific lead. On this i30 the port sits within easy reach of the driver and can be found without removing any trim, so hooking up a scanner is a quick, tool-free job.
OBD-II Port Location
On the PD i30 the diagnostic socket is under the dashboard on the driver’s side, above the pedals and tucked up higher than many people expect. Rather than sitting out in the open footwell, it is set back under the lower edge of the dash near the steering column, so it is easiest to find by looking or feeling upward into that recess. Reach up above the pedal area and run your hand along the underside of the dash and you will meet the black 16-pin connector. It is exposed and needs no cover removed, but because it sits up out of direct view a torch makes locating it far quicker.
Before You Plug In
- Park on level ground, apply the handbrake and switch the ignition off before reaching under the dash.
- Have a torch ready, as the socket sits up in a shadowed recess above the pedals.
- Slide the driver’s seat back and clear the floor mat so you can lean in and reach upward comfortably.
- Check that your tool uses the standard 16-pin OBD-II plug, which is what this i30 is fitted with.
How to Access the Connector
- Open the driver’s door and get low, kneeling by the sill or sitting sideways in the seat.
- Look up under the dashboard above the pedals, toward the area beside the steering column.
- Shine the torch or feel along the underside of the dash until the black 16-pin socket comes into view, set back in the recess.
- Line your tool’s plug up with the socket and push it home squarely until it seats firmly.
Tips for Safe Use
- Insert and withdraw the plug straight and gently so you do not bend a pin or strain the socket up under the dash.
- Keep the ignition off while connecting, then switch it to “on” when the tool prompts you.
- Unplug any dongle when you are done, as one left in place draws current and can drain the battery if the car sits unused.
- Use a scanner from a trusted brand; unreliable no-name adapters can misbehave on the CAN bus.
Frequently Asked Questions
Where is the OBD-II port on a 2017-2021 Hyundai i30?
It is under the dashboard on the driver’s side, above the pedals and tucked up near the steering column. Reach or look upward into the recess under the lower dash edge and the black 16-pin socket is there.
Why can’t I find the OBD-II socket on my i30 PD?
Because it sits higher up than most people expect, set back above the pedals rather than facing the footwell. Use a torch and feel above the accelerator area near the column and you will find it without much trouble.
Does the PD i30 need any trim removed to reach the port?
No. The socket is exposed under the dash with no cover to unscrew. It simply sits up in a recess, so it takes a look upward rather than any dismantling.
Will a generic OBD-II reader work on my third-generation i30?
Yes. The PD i30 uses the standard 16-pin OBD-II connector with CAN, so any generic code reader, phone dongle or professional scan tool built for OBD-II will connect and communicate.
If a scan of your i30 returns a specific trouble code and you want to know what it means before starting any repair, you can look it up on autodtcs.com.
Independent guide — not affiliated with Hyundai. Always follow your official service manual and safety precautions. Read our full disclaimer.