2013 Citroen C1. Approx 78K. Recently had rear exhaust silencer replaced. When car is at roundabout and or taking off while I am going from 1st to 2nd I am getting a flickering intermittent STOP car red light on dashboard. Have checked oil and water and no issue found.. Has anyone got any suggestions as to what could be causing this? Many thanks in advance.

Have you checked brake fluid in master cylinder reservoir it might be low, another possible is low pads if they have electronic indicator even handbrake adjustment can show the light