Where is the computer connector of Peugeot 408 located?
2 Answers
The computer connector (OBD interface) of Peugeot 408 is located under the cover beneath the buttons on the left front side of the driver's seat. Open the cover to find the green connector, which is the OBD interface. Additionally, there are Jack and USB interfaces inside the front center armrest box (under the cover). Below is a brief introduction about the OBD interface: (1) The OBD interface is generally a 16-pin female connector, trapezoidal in shape. (2) Some vehicle models have a protective cover over the OBD port, and the common OBD interfaces are black, white, or blue. (3) Every vehicle is equipped with a standard-shaped and sized 16-pin diagnostic connector, with each pin having the same signal assignment and located in the same position, installed below the dashboard, somewhere between the left side of the dashboard and 300mm to the right of the vehicle's center line.
To locate the Peugeot 408's computer connector, which is essentially the OBD diagnostic port, I’ve driven this car for five years and often find it in the area below the steering wheel. Specifically, after sitting in the driver’s seat, look down near your knee area—either above the brake pedal to the left or beneath the steering column, where a small 16-pin port is usually covered by a dust cap. Remember to turn off the engine and park before searching, and use a flashlight or phone light for better visibility. Avoid fumbling while driving to prevent accidents. This port connects to a scan tool for reading vehicle fault codes, making self-diagnostics convenient. If your model is newer (e.g., post-2020), the location may be similar, but if you can’t spot it, check the user manual’s diagram or compare photos in online community posts. Peugeot’s thoughtful design places it near the driver for quick technician access. Don’t forget to clean the port to prevent oxidation, which could affect diagnostic accuracy.
