Reversing light problem on a citroen c1 mk2

[Apm1274]

Hi, The reversing light on my citroen c1 2015 mk2 doesn't work. I've changed the bulb, fuse and the reversing light switch. But it still doesn't work! Is it an electrical fault? Has anyone got any ideas what it could be?

[GiveMeABreak]

Hi, you should also check the reversing switch on the gearbox, as this is what informs the vehicle you've selected reverse gear and that triggers the reversing light.

[Apm1274]

Hi Marc, I have changed the switch. But it still doesn't work.