Usually that is caused by the brake light switch becoming "out of adjustment," but sometimes it can be caused by a defective brake light switch.
Possibly a defective brake light swith stuck closed.
check little switch under your brake pedal....... and check brake fluid. This was the problem on daughters 206 . Topped up brake fluid on now ok.
probably the brake light switch on the pedal if none are working at all
how two change my front head lights on a peugeot 206
there is a wire and plug jus under your glovebox in the pasenger side footwell. if you plug that back in the lights will work properly again.
Brake it
Passions - 1999 1-206 was released on: USA: 19 April 2000
If the stop light on your Peugeot 206 is flashing, it typically indicates a problem with the braking system or a malfunction in the vehicle's electronic systems. Common causes include low brake fluid levels, a faulty brake light switch, or issues with the ABS system. It's important to check the brake fluid reservoir and inspect the brake lights for any faults. If the issue persists, it's advisable to consult a professional mechanic for diagnosis and repair.
engine fault/oil low/water low .brake fault
The Early Show - 1999 9-206 was released on: USA: 16 October 2008
Payne - 1999 Trouble in Room 206 1-6 was released on: USA: 14 April 1999
If the back lights on a Peugeot 206 are not working, make sure the bulbs are new. If the bulbs are not the problem, there could be an issue with the fuse.