Yes ABS pump internal brake pressure sensor, we get loads in like this.
The ABS will work fine but the traction light stays on and the ESP button has no effect
VW do a rapair kit for certain models of pump, I think they have just reduced the price again due to bad publicity.
You basically get half the pump so you remove your old pump, refit the new assembley, re-fit to the car bleed the brakes and code in.
