ECP Faults

[Cornershop]

Hello folks,
As per my other threads,I'm new to A/S8 but actively searching.

Planning to view a car with an ECP light illuminated,I believe, constantly. The owner advises there is no impact to performance or day to day running and it's passed MOTs without issue.

Difficult to say without getting a code reader attached I guess, however, does this sound feasible ? Are there any items / sensors etc that could trigger the EPC light without impacting performance?

Thanks in advance