2008 citroen c4 grand picasso electrical circuit fault. Hi I have the Citroen c4 picasso 2008, it came up electrical fault, the starter won't try to start and the inside dash fan won't work, it was driving ok until today, I tried the circuit board on top of battery and checked the fuses, any help please, thanks Anthony from Ireland. 2. Posted July 2, 2023. Hi got a fault coming up on my 64 c4 grand picasso. It say handbrake fault. Its a electronic handbrake the button will just flash and just show handbrake fault on dash. Read up about the cables been rusted which they was on drive side so sorted that out tidy up and taped all up so hopefully no more water but it still won LsL1zm.