Citroen C4 Airbag Warning Light

Indeed, a faulty connection within the airbag system is a common occurrence. Has the vehicle been subjected to any recent repairs or maintenance that might have disturbed the relevant wiring harnesses?

No, no recent repairs at all. Could it be something else, or is it almost certainly a connection problem?

While a definitive diagnosis requires professional inspection, the symptoms and your mileage suggest a degradation of the cable or plug connecting the airbag components. Considering the potential safety implications, I recommend a qualified workshop to examine the restraint system.

Thanks, that confirms my suspicion. I took it to a local mechanic, and you were right, it was a defective plug connection. Cost me 95€ to fix. Appreciate the advice!