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I got no warning at all on my car, just all lights coming on at once & into limp mode. I bought it second hand with high mileage so no idea how it had been driven before. I was unaware of what the dpf was before this. Now that I've had mine replaced how often should I drive at 50mph in 3rd to ensure I don't get any problems. As I live on an island its almost impossible to drive at constant high speed for more than 5 miles without having to change gear & slow down. If I change gear & the revs drop does this cancel the procedure? Can it be done stationary instead, just sit in it with foot on throttle? any advice welcome as I can't afford another dpf & selling th car after spending all that money on it seems silly.

I took my car to the dealer who said they would try to clean the dpf, but when they got it out it just disintegrated. So it had to be a new dpf - mega money.

I have a 59 plate outback 2.0sen. I've got the DPF light flashing along with the engine light, parking brake & stability mode lights on. I had no warning they just all appeared. The only thing I noticed was that the turbo was lagging since I came back from having it serviced a month ago. I have an OBD reader but it will not clear the codes. I don't have a Subaru agent here (I'm on Orkney) & no-one is expert with them here at the local garages. Do I have to take it to a dealer or is there something I can do or buy to cure it. thanks