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Discussion Starter #1
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
 
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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.
 

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Discussion Starter #3
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?
 
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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.
 

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Discussion Starter #7
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?
 
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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.
 

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Discussion Starter #9
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!
 
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No its easy enough. Fit your filter and pump the bulb under the engine cover until it becomes hard.
 

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Discussion Starter #12 (Edited)
Got stuck in today to try & cure the depollution fault & to tbh wasn't holding my breath.
Started it up hoping that it had cured itself (! ..yes I know) Checked all connection around airbox & pollen filter where I had replaced them - nothing.

Then I thought stuff it, I'll do the fuel filter - The Haynes manual said that the cases always broke & again I was expecting the worst. Dave Ireland put me at rest & said it was easier than I was dreading.

Took the top engine cover off again, that was really tight as per usual & when it came off I noticed that the right hand electrical connectors on top of the cylinders had come unplugged. Plugged it back in, started the engine & bingo depollution fault gone.

Took it for & spin & it was spot on again but although the message on the screen had gone, the engine management stayed lit.

Went back home felling much better & thought I'd do the fuel filter anyway. As Dave said really easy & no diesel spillage & no broken hosing (thanks Haynes for making sound like a nightmare job!!). Pumped the bulb til it was firm & started engine. Fired first time & now engine management light has gone out. Still pulls like a train

Just as Dave says the 'depollution fault' is a generic electrical term & does not automatically point to the DPF as I was thinking.
As it happens I have bought a new genuine Peugeot DPF off fleabay in readyness for the said day & its going to be fitted on Tuesday. When the old one comes back to me I am going to clean it as per instructions on here & keep it as a spare!!

A big thank you to David Ireland for giving me confidence a starting point - Cheers, Neil
 

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Just thought i might aswell post my experience with this DPF that i have witnessed. Mine also came about just after i had serviced the car. the fault came and after i took my brother to work and back tried the car 30 mins later and the engine management light had gone of. however in a couple of days it came back on. once i read the codes etc it was coming up with EGR not connected. my car was not loosing power even when the engine management light was on but a friend of mine did tell me to drive the car at 60mph in gear 4 for 20 minutes i thought it was worth a try so i tried it and it worked. I hope anyone reading this helps them. Also buying a new EGR valve would of cost alot i heard cleaning it also does the trick also this new DPF solution which you put in the oil which is now available from many shops that specialise in car equipment and accesories.
 
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