Sounds like your EGR valve is clogged. Give it a clean.

How far have you driven since doing the forced regeneration?

Also, have you tried resetting the fuel trip computer, and driving 10 miles or so to see what it says. If you've not done many miles since, it could be as simple as starting the forced regeneration reset the trip computer, and at the moment it's including the fuel used in that regeneration (where it will have used quite a bit of fuel and travelled zero miles) in the current calculation.

It would also be worth seeing how far the car travels on a tank of fuel to get a real MPG measurement rather than just what the trip computer says. It's important to know whether the car is really using lots of fuel, or just telling you that it is....

Perhaps get you tube to fix it for you .

:D

I think the P0401 code is the place to start. You could try EGR cleaner, but I doubt it will work. Probably better to get the manifold off and start cleaning bits. The original loss of power was probably this clogging and you're just using up fuel running regens on the DPF.

I know you said it's got new EGR. What was wrong with the old one?

Why do dpf regens? Bite the bullet and clean the egr

Edited by Crickleymal on 12/05/2023 at 20:17

Forced regeneration is my opinion is a last resort. Usually when the car doesn't regenerate on its own you are either doing very little miles or you have a fault. A forced regeneration puts a lot of stress on the engine and dpf. Are there any codes? I suspect your car is dumping diesel in the sump so I would check your oil asap before the engine runs away. Get the fault fixed or give it a long run once a week. Then do an oil and filter change.

Edited by JONATHAN_11_80 on 14/05/2023 at 20:56