Jinx99

For the past 2-3 months, every so often all of my orange warning lights have been coming on my car, followed by another orange light that says "please wait, system initializing". My garage seems to think that all of the sensors are connected to this "system" and that if one of them is faulty (they told me an ABS sensor, i've had one replaced but they seem to think it's another one now) it will set all of the lights to come off, but I'm not 100% sure with that, can anyone help? Thanks!