28-04-2020, 09:12 AM
Welcome to the club! On my dad's 306 estate, happen the same thing. We disconnected the battery terminal (I think it was the positive side) and wait 10 to 30 minutes with the battery disconnected, and then see if that solves it. It worked for me.
Peugeot 306 S16 Build Thread - https://www.306oc.co.uk/forum/showthread.php?tid=33670