407 hdi particulate filter problems
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Thread: 407 hdi particulate filter problems

  1. #1
    Tadpole
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    Icon11 407 hdi particulate filter problems

    I am having problems with a 407 particle filter blockage at risk warning. I have been advised by dealer that this is caused by very short trip running conditions. A long trip at 100kmh doesn't seem to stop the warning from re appearing intermittently.Has anyone had these issues with this model.

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  2. #2
    Fellow Frogger!
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    Default 407 faults

    its not just the 407 the 307 hdi is giving the same warning.long drives dont always fire up the filter and clean it out.clearing the codes needs to be done so the ecu knows its be cleaned up or it can look at the code and think its still faulty.in the uk they are haviing to replace the filters at a large cost.so far i havnt heard of any here but that will change.if it cant be cleaned then off to your local friendly (ha ha ) dealer and they will try a fap clean process.good luck

  3. #3
    Tadpole
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    Default 407 particle filter

    Hi Charles,
    Thanks for your input to this problem. The dealer has just done a regeneration on the filter on Thurs.28/4.
    This is the second regeneration in 6000 kms done by dealer. The car seems to be running great now as it did last time but for how long.What a shame to have a nice car in the driveway which you can't use for normal driving - down to the shop - to school - with the weekly trip/ s to geelong about 30 kms each way at highway speed - 100 kmh - etc. I am surprised there are not a lot of 307 - 308 - 407 owners out there who use their vehicle in this manner who aren't having any problems.By the way how do you reset fault codes without specialised equip? Should have purchased a petrol model - traded in a great 406 for this nightmare thinking about economy / environment etc. Silly me.

  4. #4
    Fellow Frogger!
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    you cant delete codes unless you have a scanner or the like.the driving you described
    should be enough to clean up the fap filter by itself.the short running is a worry but the 30k run over 80kph weekly should be enough unless you have another fault causing overloading of the system.get your egr valve checked,its causing quite a few problems at the moment.the ecu will tell the dealer how much driving you do thats under the good level.the economy of the petrol engine now is so good you arnt that much better off with a hdi and less hassles.unless you do large kms yearly the cost of the car,fuel and maint you dont get any advantage mostly.city drivers dont know what they have bought until its too late.but hey it makes you feel green,for a while.
    Last edited by charles; 2nd May 2011 at 11:41 AM. Reason: extra info

  5. #5
    Fellow Frogger! jurgen_s's Avatar
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    Have you witnessed the forced regen of the fap? If not you should because it is quite a horrific experience seeing your car being almost tortured by the diagnostics computer

    If the fap is really blocked by to short trips, you should change your driving style to. Once the engine is warmed up, don't be scared to pull up very quickly with the throttle to the ground and only shifting gears when the rpm reaches 4000.
    If you have the warning light again, you can do yourself a sort of forced regen. Drive the car for 10 minutes (when the engine is warmed up) keeping it above 3500 rpm.

    But to be honest, I still think of a technical problem: wrong oil in the past, something wrong with the eolys or the system that gets it in the tank or even the pressure sensor in the fap. The only way you can see that is by taking apart the fap and eventually clean it out yourself with a high pressure washer (but please catch up the filthy water since it is highly toxic) on both sides. Look on the internet how it is done and you can see if it is a job you are technically able to do. In the end it is no more than just unscrewing some bolts and removing the fap.
    Let your dealer check the interval when the on board computer starts the cleaning of the fap. Normally it should be around every 600 to 800 km's, cars that do highway have even higher intervals. If this interval is shorter it is because of one of the reasons described above.
    505604 and michaelk like this.
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  6. #6
    Tadpole
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    Default 407 particle filter

    Hi Jurgen,

    Thanks for further info. and advice. So far everything is running smoothly and maybe we have corrected an earlier problem with the latest forced regen. If the light appears we will know what action to take. We have some nice high cliffs around here.

    Regards,

    Glen.
    Last edited by glenl1953; 4th May 2011 at 08:44 PM.

  7. #7
    Tadpole
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    Hi All, So far no warning lights since the regen on 27/4. No short trips though we use the old 505 petrol for those.Fingers crossed. Thanks everyone for your input on this problem. Glen.

  8. #8
    1000+ Posts Capago's Avatar
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    Default

    Quote Originally Posted by jurgen_s View Post
    Have you witnessed the forced regen of the fap? If not you should because it is quite a horrific experience seeing your car being almost tortured by the diagnostics computer
    very true. car has to be at operating temp i.e. 90 degrees C, and then it sits there doing 4000rpm and you can see all the shit coming out of the exhaust onto the ground. sounds like a blowtorch at times
    505604 likes this.

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