Engine-Anti Pollution System - Broken?

[krammy]

Engine Anti Pollution system defective?

What could be the problem? the car loses all power when this message appears on the screen on my 406

2.0 16v GLX 52 plate *petrol*

Also it sounds like a diesel on idel, someone said the head may be gone or a oil-fuel pump, killing the tappets/injectors

[adampv6]

When I had this on my V6, it would run a bit rough and felt sluggish. turns out it was the coil pack. had that replaced and it's been fine since!