MC Forward Collision Alert System fault

[steerage250]

Yesterday, while driving along normally in traffic, a yellow warning light appeared which looks like one car crashing into the rear of another.

The Forward Collision Alert system uses the radar, but the adaptive cruise control is still quite happy.

I used Forscan to find that the Cruise Control Module (CCMii) was reporting a DTC code: C1A67:87-28. I cannot find reference anywhere to this code.

I have:
- reset the DTC
- done an on demand self-test of the CCMii module (all good), and
- done a module reset of the module

The light is still on.

Any ideas ?