'De-Pollution System' Fault on MFD

[demaliar68]

Hi there, I own a 2005 facelift 307 XSi 136 with 79,106 miles on. Up until 5pm today it has been running brilliantly

I have just changed the oil & oil filter this week & everything was ok
I have just changed the air filter & pollen filter today as they were filthy. Got a fuel filter but didnt get chance to do that.

I reset the service indicator as shown in the handbook & started the engine & suddenly have got a 'De-Pollution System Fault' on the screen & it is running really lumpy & wont rev above 2,800 rpm (I'm assuming this is limp home mode)

Would changing these filters & resetting the service light have anything to do with it

Advise would be very welcome - thanks, Neil

[davidireland]

Get a diagnostic check done and post up faults.
de-pollution system faulty is a generic warning for any electronic problem. It is not pointing to anything specific.

[demaliar68]

Thanks David,

I thought it may have been something that I had done. Is an anti-pollution fault different? Funny thing is that I bought a new DPF in precaution & its booked in for it fitting on Tuesday. Do you think that fitting the new fuel tomorrow will have any detrimental effect?

[davidireland]

Originally Posted by demaliar68

Thanks David,

I thought it may have been something that I had done. Is an anti-pollution fault different? Funny thing is that I bought a new DPF in precaution & its booked in for it fitting on Tuesday. Do you think that fitting the new fuel tomorrow will have any detrimental effect?

No need to change the DPF, just clean it out. You're wasting your money.

[demaliar68]

What are your thoughts on changing the fuel filter before it goes in?

[davidireland]

Up to you. When was it done last?

[demaliar68]

The car was supposedly serviced 4,000 miles ago before I bought it. Looking at the state of the oil filter, air filter & cabin filter that was more like 24,000 ago!

So I would expect Is there anything that I could have disturbed when I change the air filter & cabin filter & reset the service light? It ran perfectly before i did these and the depolution fault & engine light came on the second I restarted it

Would disconecting the battery for 30 mins help to reset things?

[davidireland]

Go over the areas you worked on. make sure no connector is disconnected is about all you can do.
Best get a diag check done though.

[demaliar68]

Thanks for your valued assistance David, much appreciated.

Is changing the fuel filter straight forward on the diesels or do I need to bleed anything etc?

I'll go over things tomorrow when its light & I can see what I am doing - no room in garage for motorbike stuff!

[davidireland]

No its easy enough. Fit your filter and pump the bulb under the engine cover until it becomes hard.