DPF light on and loss power.

[Cornish]

Can anybody help with my problem.  I was driving normally and the DPF warning sign cane on and the car has restricted power.  The AA came out to have a look at the car and plugged in the diagnostic reader and there was no fault codes.  Which he was surprised and not sure what to do next, apart to say to take it to the garage and for them to sort it out.  I wasn't really that impressed with the guy.  So is this going to be a costly fix and I have just spent £600 on a replacement egr cooling pipe !!  Please help anyone 🙏 😢 

[Trevor]

Did you get any resolve on this issue?

Did the EGR pipe help matters?