DPF light coming on soon after a regen

[NuckyThompson]

I have a Mazda 6 sport. Just had a new DPF fitted, light came on after a week so had it regenerates via diagnostic computer but 2 days later it’s back on.

It’s only a runaround car with 125k on it, just wondering if there is likely an underlying reason why it might be clogging straight away or more likely to be a sensor issue. Want to avoid it going into limp mode again if I can help it

[NuckyThompson]

had it replaced as the garage wouldnt just leave it out haha.

So it's more likely a sensor issue or needs a service reset? I assume mazda have to do that though?