Ecosport keyless access failure

Sounds plausible. Keyless entry issues on these can be tricky. Is it happening on all doors, or just one? Have you checked the fuses? Sometimes it's the simplest thing, but yeah, a dodgy connection in the door mechanism is a common culprit.

It is occurring only on the driver's side door. Regarding the door mechanism, is it likely the door handle or the door actuator?

Ah, driver's side only narrows it down a bit. Honestly, without proper diagnostics, it's hard to say for sure. Could be the door handle itself, the actuator, or even the wiring in between. Given the error code and your symptoms, I'd lean towards a visit to a workshop to get it checked out properly. Could save you money in the long run by avoiding unnecessary parts replacements.

The diagnosis confirmed a defective connection. Repair cost was 95€.