Astra 2.0cdti dpf regen info?

[stigeye]

I think the car will do a regen when the exhaust pressure sensor detects that the pressure in the dpf is at a point where a regen is required. So it isn't necessarily anything to do with a set period of time or distance. This is why it can go of at random times regardless of long or short journeys. Ours went off on Friday, we got in he car and it said dpf was full and continue driving, took it up and down the bypass a few times until the puffs of soot came out the exhaust and light went out.