When I hit about 70mph or about 2500 revs, a particle blockage and anti pollution fault pops up on the dashboard of my Peugeot 207 1.6hdi GT (2007). Is this a common issue and what can be done to repair this.
Scan it with Diagbox/PP2000 and check the live readings of the particulate filter [DPF]. It will tell you how much soot is in it and when it last did a regen. You can force a regen with the software, but it will only do so if the system is in good order.