CITROEN announced a problem with the C4 & C5 affecting a total of 520 vehicles.
It has been identified that, vehicles fitted with 2I HDI engines may have been fitted a vacuum pump which may not be to specification. This could lead to a decrease in braking assistance. Vehicles built from 7/6/2005 to 7/7/2005 are at risk.
Recalled vehicles will have the vacuum pump replaced.
If you think that your vehicle may be affected by this recall you should
find your nearest CITROEN dealer
who will be able to confirm whether or not your car is safe and arrange its free repair if necessary.
Source: UK Government's Vehicle and Operator Services Agency (VOSA).