Engine management light is on, but no errors found

[tmmv1]

Hello. looking for some advice please.
Berlingo multi 1.9d, My engine management light is on so i took it to the local garage to see what the diagnosis was but the computer could not find a fault. Does anyone have any ideas if i can switch this engine management light off or reset it?

[polar]

I have seen this happen before when the diagnostic equipment does not read or is not operated correctly. I would advise you take it to a different garage of find someone local to you with a diagnostic kit.