Front and rear parking sensors packed up continuous tone when starting up and button flashing
Diognostics saying front sensors power circuit and the same for the rear
All fuses under the bonnet and in the glove box ok
Any ideas ?

Corroded wiring loom more than likely.

Have you physically listened in to your sensors to see if any of them are clicking? to make sure its not an individuale one that's blown causing a short?

About 18 months ago my rears packed in and when taken to the dealership it was the fault of the wiring loom so it was all replaced. Then a few months back my fronts were faulting out ( which deactivates all of them) it was very intermittent but eventually i listened and could hear the front driver side corner not clicking like the others, upon removal of this, it's internals had completely fell apart causing shorts. Since i replaced this all has been fine.

I've had a listen and rested my finger on all of them and none of them seem to be doing anything , looks like I'll have to take it to a dealership

Sounds like oit could definitely be wiring loom, If you confident in removing your own bumpers (plenty of guides) you could replace it yourself, To supply and replace my rear loom was just under £400.

Or take it to an auto electrician, who could trace the wires and just repair the broken wire.

I've ordered and picking up a loom today from Harwoods so will sort it out at the weekend
Cost wise £70 odd plus vat

Can anyone tell me what the part number for the front loom is?

Thanks in advance

YMQ501631

Cheers
Col

Magic, thank you very much.

Replaced the loom tonight and it's still the bloody same !

I gave up after pishing about with front rear looms/sensors & just removed the fuse under the glovebox.

Just park carefully now, like I've always done with cars/vans that don't have sensors, not an issue.

What fault specific codes are to getting now? Over for a visit from disco3.co.uk

B1b57-11 front sensors power circuit
B1b58-11 rear sensors power circuit

However I didn't get the fault codes cleared after I fitted the new rear loom , if that makes a difference

Had an auto Sparks have a look yesterday ( very reasonable price if anyone needs his number ) and turned out to be the parking ecu should of got him up first rather than buying a new rear loom .
All fitted tonight and working as it should