Peugeot Forums banner

P1445 Maximum threshold of additive in the particulate emission filter reached

61K views 11 replies 6 participants last post by  boostin  
#1 ·
Does any one know what the following means:

P1445 Maximum threshold of additive in the particulate emission filter reached

According to the local Peugeot specialist it means the DPF has had as much additive as it can take and the car requires a new DPF.

Not sure I believe this as I don't see how the ecu can know this especially as the dpf is showing as 95% clear.

The only thing I can think of is that Peugeot programmed the car to decide the dpf needed replacement after a given number of regeneration cycles regardless of the actual condition of the dpf.

Can anyone explain what is actually happening please combining this latest fault with all the other problems I have on my 307 it looks like the next trip might be to a scrap yard.
 
Discussion starter · #6 ·
Thanks for the responses, they were very useful.

My problem is that I'm being quoted ÂŁ500 for a new dpf, fuel cap sensor and differential pressure sensor, I can't find anywhere willing to take it off and clean it or fit a reconditioned one, although I can find loads of places willing to take it out!

Does anyone know anywhere in the Poole/Dorset area who would quote lower or could help with Peugeot plant without insisting on replacing everything?
 
Discussion starter · #9 ·
Thanks, a local independent Peugeot specialist checked it out and came up with the faults:
P1445 Additive etc
Fuel filler switch not responding
Differential pressure switch incorrect reading before engine starts

So he is suggesting replacing the DPF, and both switches at ÂŁ500. Then there is the service and cam belt this year and three locking wheel nuts which nobody can get off except for one company quoting ÂŁ100 per wheel. Then the local Peugeot specialist said he was concerned that the turbo was on it's last legs.

So I'm nervous about starting down a path spending which could cost far more than the car is worth.

I used to have a 406 hdi which never had any problems, part exed that for the 307 in 2011 and since then it has cost ÂŁ4-800 per year in unexpected bills and failures!