Citroen C5 2012 2.2HDI automatic

[Ben C5]

I have this car since 2023, it had 205000 km now it has 295000. It runs very good except one little thing.
When driving uphill and I have to stop, sometimes when I release the brakes the car moves backwards. I am used to it now, so I don't release the brake until I am sure it will not do that.
I was at the local dealership service, and tried a couple of Citroen service shops, but they can't find the fault.

[mickthemaverick]

That sounds like a lazy sensor type problem, can you get it scanned for fault codes?

[Ben C5]

every time I send the car to a workshop they suspect it's a automatic transmission problem, but the transmission doesn't give any faults.
I will send it to check for sensor faults.
thanks

[Ben C5]

That sounds like a lazy sensor type problem, can you get it scanned for fault codes?

The fault is U1213 - Permanent fault - Vehicle speed information incorrect value received