ESP90 (authomatic breaking): Absence of signal

[PepeAravaca]

I have a Citroen Spacetourer and whenever I run a global test with a Diagbox (9.150) I get the fault:
ESP90 (CAN bus ground adhesion or high speed 2):
Fault: Absence of signal
Status: Fugitive
Authomatic breaking in case of collision risk: Inhibited

I can clear the fault, but as soon as I run the test again, it pops up again. Everything else (ABS, power steering, ...) seems OK in Digabox and driving.

Any hint, please?

[GiveMeABreak]

Depends what system you have for this function, but it is likely the ESP system is not happy about one of the sensor inputs and as a result has disabled any systems that rely on that sensor - in this case the automatic braking. I can't say if this is related to Active Safety Brake, or ARTIV distance control (if you have front camera and / or ARTIV RADAR) in the bonnet for active distance maintaining.

In either case it will likely need a dealer intervention as these things need specific training and equipment to diagnose and calibrate.

[PepeAravaca]

Thanks. I will dig a bit more before having it serviced. If I find something, I will post it here.