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Honda Accord iDTEC DPF light on!

  • 17-04-2016 7:13pm
    #1
    Registered Users Posts: 28


    DPF Cleaning or Replacement ?

    The dreaded DPF light (with !) can on my 2009 Honda Accord recently. The car has over 130K miles up so I wasn't too surprised. I decided to go down the DPF cleaning route rather than replacement, mostly due to the high cost charged by Honda (€1300-1500). I also bought Launch X431 OBD diag kit to monitor the cars ECU. Here is what I found, I hope it helps others in the same situation.

    The DPF light (with !)comes on fully when 19g of particle matter (PM) is read by the ECU. The only way to turn it off at that point is with diags on the ECU. Driving in 3rd gear on the motorway is a waste of time.

    The differential pressure in the DPF will go up the more the PM value rises. It is advisable to do something about it when the light comes on. A high pressure may damage the turbo and other upstream systems on the engine.

    I firstly got Honda to do a forced regeneration. This is a diagnostic controlled regeneration on the DPF. Basically a DPF regeneration (Forced or natural) is like an incinerator. The Temp is driven up from normal, in my case about 250-380 to over 600 degrees. At this temp all PM is burned to ash. The car jets diesel into the DPF to cause this inferno.

    The forced regen was a waste of money and time. The light was on again in 200 miles. It cost €80 and €140 to have my aircon regased as its needed for the forced regen. My advise don't bother with it.

    I next took the DPF out and got is cut open and professional cleaned. It’s relatively easy to remove if you are mechanical. 3 bolts to turbo, 5 at bottom to exhaust. remove a few sensors (carefully), remove covers. The DPF light came on again after about 200 miles.

    At this point I got Honda to recheck it. They said the PM was higher than 19g so they reset it back to 0 again. (They didn't do a forced regen, just reset the PM)

    I had noticed that each time the DPF light came on it was during hard acceleration. I changed my driving habits until I received the Launch X431 OBD diagnostic kit in the post. With this I was able to see what was happening. I drove the car easy keeping the revs always below 2.5K. The PM value continued to rise until it hit 12.7g. At this point the DPF control status value changed from 0x00100001. The DPF temp (as read on the Launch kit) when to over 600 degrees and the PM started to drop off until the value went to 0 in steps of 0.3g. The DPF diff pressure was at 1.4kpa at tick over and at about 4-5Kpa at 100kph normal driving.

    The regen took about 10 minutes and occurred during normal easy sixth gear driving.

    Since then I have monitored the car do multiple regens and I drive normally now. No need to nurse revs anymore. With my driving style the car regens about every 900 miles.
    My adivse , if you choose to get the DPF cleaned rather than replaced, go for the industrial cleaning methods (€300 approx.) rather than the chemical foam (can of spray into DPF) methods. Service the car and replace all filters. I did an oil flush and used good quality 0w30 oil. Drive the car easy for the first 1000 miles until it starts its own regen cycle again.
    My car has over 3500 Miles up now since the DPF was cleaned, Driving perfect. DPF diff pressure normal (under 10kpa for normal driving , may jump up during hard acceleration.
    This is kind of an experiment to see if DPF cleaning works long term as claimed. I will update again at higher mileage.

    A friend also had the same DPF issue with his 2008 Honda accord. Again Honda looking for €1500 for a replacement. Using diags he found that the temp sensor was not reading. He cleaned the connector, Cleaned the DPF, did a regen and this sorted it.


«1

Comments

  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    Hi just wondering how you have been getting on with this? My light came on this morning for first time since I got the car which is only 3 months ago so it's covered under warranty.

    Rang up the dealer they told me to drive it on the motorway to see if that that gets rid and if not bring it in they will do a forced regeneration.


  • Registered Users Posts: 28 pmeade1


    jayo26 wrote: »
    Hi just wondering how you have been getting on with this? My light came on this morning for first time since I got the car which is only 3 months ago so it's covered under warranty.

    Rang up the dealer they told me to drive it on the motorway to see if that that gets rid and if not bring it in they will do a forced regeneration.

    Hi Jayo26
    If the dpf! is on then no length of motorway will sort it. You need to reset the PM . A forced regen will do this. I use launch dbscar to do it.didnt need to regen last time i reset the PM.
    I had to regen after about 10kmiles. I now have 19kmiles up since dpf cleaning.I had to reset.PM again recently. After reset need to drive easy for at least 900 miles as this is mileage needed for PM to reach 12.6g at which point the car will do a regen itself. Once i get it regen'ing itself it runs fine.
    I have a colleage who also has dpf issues with his accord. He eventually got a sensor replaced on the dpf. This seems to have sorted it for him. Honda main dealer just wanted to replace dpf at huge cost.
    Im not sure what is wrong with these cars as if this was a dpf blocked issue why would the car do 10k miles before bringing on the light .should it not come on soon after clearning the PM..


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    I brought mine out for a spin this morning but Yeh no joy it is the dpf! I have it booked in for Monday morning they going to regen it I'll see how it goes then. Its covered with them until next June so it's not a panick moment yet.

    They tried to tell me it was doing a lot of short journeys that is causing it and Yeh we do alot of town driving we still have it out on roads at least twice a week I've done 6000 on it in 3 months so it's getting a good run.

    Thanks for your response.


  • Registered Users Posts: 28 pmeade1


    jayo26 wrote: »
    I brought mine out for a spin this morning but Yeh no joy it is the dpf! I have it booked in for Monday morning they going to regen it I'll see how it goes then. Its covered with them until next June so it's not a panick moment yet.

    They tried to tell me it was doing a lot of short journeys that is causing it and Yeh we do alot of town driving we still have it out on roads at least twice a week I've done 6000 on it in 3 months so it's getting a good run.

    Thanks for your response.

    Short journeys they say causes more pm in the dpf also according to what Honda told me they expect the dpf to start failing as mileage approaches 100k.
    Regen will help but if its a case of a blocked dpf you may need replacement or cleaning. If it.was me and I had a warranty i would want a new dpf. If you go to a honda main dealer without a warranty as is my situation they will not standover a dpf clean and will look for upto 1500 to replace the dpf. If you get a chance post back how you get on with this one


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    Will do. Have you looked into getting the dpf removed how would it fair passing an nct?


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  • Registered Users Posts: 28 pmeade1


    jayo26 wrote: »
    Will do. Have you looked into getting the dpf removed how would it fair passing an nct?

    Would need to remap ecu. Nightmare if not done correctly. Bit risky. The car would actually be better off without it but EU emission laws dictate.
    I have been driving Honda for years and to be honest this DPF issue is putting me off them. It not the fact that they fail so much as Hondas costly replacement charge.
    Best of luck with it.


  • Closed Accounts Posts: 5,115 ✭✭✭Pacifico


    Does the DPF regularly cause issues in the newer accord 2009 - 2012? Looking at a 2012 with relatively low milage... Thanks!


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    Pacifico wrote: »
    Does the DPF regularly cause issues in the newer accord 2009 - 2012? Looking at a 2012 with relatively low milage... Thanks!

    Yehh it is a common problem but otherwise they seem to be bulletproof as long as they are looked after service wise.

    Mine was covered under warranty thankfully but I will say it wouldn't put me off buying the car again it is an absolute joy to own in every other way I love driving it.


  • Closed Accounts Posts: 5,115 ✭✭✭Pacifico


    Thanks! And is it a case that it will happen when the car hits a certain millage or it depends on the type of driving? ie short journeys?


  • Registered Users Posts: 28 pmeade1


    Hi

    The DPF will usually fail over 100K on the Accord. Mine went at 130K miles.Regarding DPF and short journeys. Shout journeys will not help the DPF but long or short it will eventually fail.

    I managed to get another 40K miles out of it after a cut and cleaning. I cleaned it again recently with a chemical but it failed after about 50 miles ( I have a computer to view the pressure levels and could see them rising until that dreaded light came on again). I have no choice now but to replace the DPF at a cost of approx 1200. I would not advise buying the ebay DPF's as quality may be questionable.

    Note also these car have issues with the EGR pipe. Its a known issue on some 2009-2010 models. Look up Honda Accord EGR pipe fault!. Honda will replace upto 125K miles/7 years, after that is a cost of over 400. Nasty one as it leaks fumes into car.
    Other issue with the accord is rear brakes - they are crap and may end up replacing a brake cylinder.
    Over all the Car is reliable and nice car to drive but the emission systems (DPF , EGR) really leave it down.
    If I was buying another accord I would make sure of the mileage (do the checks as lots of clocked out there). If getting close to 100Kmiles I would consider the cost of DPF in the price. Also make sure the EGR is not an issue.


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  • Registered Users Posts: 3,855 ✭✭✭Panrich


    pmeade1 wrote: »
    Hi

    The DPF will usually fail over 100K on the Accord. Mine went at 130K miles.Regarding DPF and short journeys. Shout journeys will not help the DPF but long or short it will eventually fail.

    I managed to get another 40K miles out of it after a cut and cleaning. I cleaned it again recently with a chemical but it failed after about 50 miles ( I have a computer to view the pressure levels and could see them rising until that dreaded light came on again). I have no choice now but to replace the DPF at a cost of approx 1200. I would not advise buying the ebay DPF's as quality may be questionable.

    Note also these car have issues with the EGR pipe. Its a known issue on some 2009-2010 models. Look up Honda Accord EGR pipe fault!. Honda will replace upto 125K miles/7 years, after that is a cost of over 400. Nasty one as it leaks fumes into car.
    Other issue with the accord is rear brakes - they are crap and may end up replacing a brake cylinder.
    Over all the Car is reliable and nice car to drive but the emission systems (DPF , EGR) really leave it down.
    If I was buying another accord I would make sure of the mileage (do the checks as lots of clocked out there). If getting close to 100Kmiles I would consider the cost of DPF in the price. Also make sure the EGR is not an issue.

    Would this problem also affect other Honda models like the crv or diesel civic? I have really only heard of the dpf problem in Accords.


  • Registered Users Posts: 28 pmeade1


    Panrich wrote: »
    Would this problem also affect other Honda models like the crv or diesel civic? I have really only heard of the dpf problem in Accords.

    Not sure about those models. More familiar with the idtec 2.2 engine.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    O lord my light just came on too today, no power to the engine either, 09 accord


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    O lord my light just came on too today, no power to the engine either, 09 accord

    Does it have the exclamation mark ?


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    jayo26 wrote: »
    Does it have the exclamation mark ?

    Yip it's there, please tell me that's a good exclamation mark


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    It's bad just checked the manual, needs to go to the garage asap!!


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    It's bad just checked the manual, needs to go to the garage asap!!

    Yeh pal it's the same one as I had has to be brought in.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    jayo26 wrote: »
    Yeh pal it's the same one as I had has to be brought in.

    What was the outcome for your car?


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    What was the outcome for your car?

    Mine was covered under warranty they did a clean and re-gen on it and it's been fine ever since... touch wood.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    jayo26 wrote: »
    Mine was covered under warranty they did a clean and re-gen on it and it's been fine ever since... touch wood.

    Mines just out of warranty by a month, I'm sickened, I'll ring tomorrow and see my options if any. Thanks


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  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    Mines just out of warranty by a month, I'm sickened, I'll ring tomorrow and see my options if any. Thanks

    No problem that's a sickner best of luck.


  • Closed Accounts Posts: 1,847 ✭✭✭Armchair Andy


    Mines just out of warranty by a month, I'm sickened, I'll ring tomorrow and see my options if any. Thanks


    If they do anything for you great but if not I'd be taking it to an indy.
    Have you started it since it got cool?


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    Just started it now need to get diesel, wats indie


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    Just started it now need to get diesel, wats indie

    He means an independent garage and not a main dealer.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    jayo26 wrote: »
    He means an independent garage and not a main dealer.

    The father has a Tucson and his dpf came on too the garage took it to be cleaned and two weeks later the light came back on, it comes on and off the whole time now. Dunno really could it be just a very temporary fix


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    The father has a Tucson and his dpf came on too the garage took it to be cleaned and two weeks later the light came back on, it comes on and off the whole time now. Dunno really could it be just a very temporary fix

    Each car is different but there is no permanent fix on the honda from our years. Replacing it should last for another plus 100k mikes or getting the regen will last anywhere from 10k miles upwards.

    If mine goes again I'm going to get it removed all together and get the ecu remapped it's risky if it's done wrong.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    jayo26 wrote: »
    Each car is different but there is no permanent fix on the honda from our years. Replacing it should last for another plus 100k mikes or getting the regen will last anywhere from 10k miles upwards.

    If mine goes again I'm going to get it removed all together and get the ecu remapped it's risky if it's done wrong.

    If I got it regen how much would it cost? If it's removed will it fail the nct


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    If I got it regen how much would it cost? If it's removed will it fail the nct

    I don't know on the cost as i didn't pay for mine. From what I've read and been told it won't fail but if advice you to do your own research on that.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    jayo26 wrote: »
    I don't know on the cost as i didn't pay for mine. From what I've read and been told it won't fail but if advice you to do your own research on that.

    Cheers, I'll ask around in the garages here and see what they say. Thanks again


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  • Registered Users, Registered Users 2 Posts: 73 ✭✭Dcmb1984


    jayo26 wrote:
    I don't know on the cost as i didn't pay for mine. From what I've read and been told it won't fail but if advice you to do your own research on that.


    I did forced regen twice with a main dealer. 80e each time. The third time my dpf! came on I went to my local garage and he removed it, got it washed, refitted it and changed the engine oil+filter. 550e. Main dealer wanted 1650e for a new one. My local garge also had to do a forced regeneration after refitting washed dpf and I was there when it happened. He basically plugs in the computer and the car does its own thing. Took 30mins. Main dealers are cleaning up out of this. It would take the mechanic 1 min to plug in computer and get it up and running. And one min to disconnect computer. And I'm being generous at that. 80e for 2 mins of a mechanics time.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    Dcmb1984 wrote: »
    I did forced regen twice with a main dealer. 80e each time. The third time my dpf! came on I went to my local garage and he removed it, got it washed, refitted it and changed the engine oil+filter. 550e. Main dealer wanted 1650e for a new one. My local garge also had to do a forced regeneration after refitting washed dpf and I was there when it happened. He basically plugs in the computer and the car does its own thing. Took 30mins. Main dealers are cleaning up out of this. It would take the mechanic 1 min to plug in computer and get it up and running. And one min to disconnect computer. And I'm being generous at that. 80e for 2 mins of a mechanics time.

    I rang the local mechanic there, he was saying madness to buy a new one, he will send it to dpf clinic in Shannon change oil and filter €600 he did a 2010 2 months ago this way and it's going good since, he was saying the forced regen last about 2 weeks for the same money €80


  • Closed Accounts Posts: 1,847 ✭✭✭Armchair Andy


    I rang the local mechanic there, he was saying madness to buy a new one, he will send it to dpf clinic in Shannon change oil and filter €600 he did a 2010 2 months ago this way and it's going good since, he was saying the forced regen last about 2 weeks for the same money €80

    I had mine cleaned and refitted about 18 months ago with the regen and not a bother since.Well worth the 600 I think.


  • Registered Users, Registered Users 2 Posts: 1,255 ✭✭✭TigerTim


    I rang the local mechanic there, he was saying madness to buy a new one, he will send it to dpf clinic in Shannon change oil and filter €600 he did a 2010 2 months ago this way and it's going good since, he was saying the forced regen last about 2 weeks for the same money €80


    I used the company in Shannon (DPF Clinic) about 6 months ago for the DPF in my Citroen & all OK since.

    T.


  • Registered Users, Registered Users 2 Posts: 24,644 ✭✭✭✭punisher5112


    I would recommend against removal as these are fitted to lower dangerous emissions such as particles, NOx gasses which are extremely harmful.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    I'm booked in now to have mine sent to dpf clinic, €600 all in. Went with local garage didn't bother ringing the dealership


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  • Registered Users, Registered Users 2 Posts: 1,407 ✭✭✭Audioslaven


    Do the DPF clinic clean your DPF or do they give you a cleaned DPF from some other person's Honda car.

    Wonder is there much stripping to take out the DPF in Honda I-DTEC?

    I have a Civic I-DTEC 2.2, so if it is pretty straight forward, I would do it myself when the time comes.
    I have a Mazda 3 and I took DPF out (DFP and CAT all in one) out a few weeks ago and cleaned it with water and some cleaning fluid. So far so good with it but a new DPF from Mazda is around 650 Euro so that not too bad considering the price of the Honda one.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    Do the DPF clinic clean your DPF or do they give you a cleaned DPF from some other person's Honda car.

    Wonder is there much stripping to take out the DPF in Honda I-DTEC?

    I have a Civic I-DTEC 2.2, so if it is pretty straight forward, I would do it myself when the time comes.
    I have a Mazda 3 and I took DPF out (DFP and CAT all in one) out a few weeks ago and cleaned it with water and some cleaning fluid. So far so good with it but a new DPF from Mazda is around 650 Euro so that not too bad considering the price of the Honda one.

    Dunno how they go about cleaning it but my mechanic said €300 to get it cleaned and €300 labour


  • Registered Users, Registered Users 2 Posts: 73 ✭✭Dcmb1984


    I rang the local mechanic there, he was saying madness to buy a new one, he will send it to dpf clinic in Shannon change oil and filter €600 he did a 2010 2 months ago this way and it's going good since, he was saying the forced regen last about 2 weeks for the same money €80


    Mine was also sent to Shannon. I believe the place in Shannon is the best around. Whatever method they use Im not sure but there seems to be every Tom/Dick and Harry with dpf cleaning machines advertised and I rang a few of them and not many would inspire confidence I'll just say. We had to do a forced regen after fitting the cleaned filter to turn off the dpf! light. Thats 2 months ago and car is goin great. (touch wood). Loads more power.


  • Registered Users, Registered Users 2 Posts: 311 ✭✭whacker1982


    Dcmb1984 wrote: »
    Mine was also sent to Shannon. I believe the place in Shannon is the best around. Whatever method they use Im not sure but there seems to be every Tom/Dick and Harry with dpf cleaning machines advertised and I rang a few of them and not many would inspire confidence I'll just say. We had to do a forced regen after fitting the cleaned filter to turn off the dpf! light. Thats 2 months ago and car is goin great. (touch wood). Loads more power.

    Small world, Kevin Hourigan was telling me about your car so, i rang another crowd n limerick and they could not give me a price for it to be cleaned or where it was going. Rang Kevin told me my options and what's the best route to go. Second time dealing with him now. I'll be sticking with him.
    How did you twig I was talking about your car???


  • Registered Users, Registered Users 2 Posts: 73 ✭✭Dcmb1984


    I rang the local mechanic there, he was saying madness to buy a new one, he will send it to dpf clinic in Shannon change oil and filter €600 he did a 2010 2 months ago this way and it's going good since, he was saying the forced regen last about 2 weeks for the same money €80


    This had to be me.
    He is a great mechanic also. A handy guy to know and always willing to help.


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  • Registered Users Posts: 28 pmeade1


    Final note on the DPF . DON'T waste your money on regens or filter cleaning!

    I tried it all. its doesn't work. A full filter cut and clean lasted about 25K miles , in that time I had to turn off the dpf ! hash light many times using software. Anytime I pushed the power I risked turning on that dreaded light. In the end I had to fork out the 1200 for a replacement DPF. These DPF's seem to be only good for about 100-120K miles. Its a real con considering the cost and all the bull lately telling us that they don't even work!

    honestly I don't know what to be believe these days. You would think with the bloody DPF, The EGR, The Cat, and the Adblue in new Euro6 cars that a diesel was clean as a whistle , if not what the hell have we been paying for!


  • Registered Users, Registered Users 2 Posts: 12,235 ✭✭✭✭Cee-Jay-Cee


    pmeade1 wrote: »
    Final note on the DPF . DON'T waste your money on regens or filter cleaning!

    I tried it all. its doesn't work. A full filter cut and clean lasted about 25K miles , in that time I had to turn off the dpf ! hash light many times using software. Anytime I pushed the power I risked turning on that dreaded light. In the end I had to fork out the 1200 for a replacement DPF. These DPF's seem to be only good for about 100-120K miles. Its a real con considering the cost and all the bull lately telling us that they don't even work!

    honestly I don't know what to be believe these days. You would think with the bloody DPF, The EGR, The Cat, and the Adblue in new Euro6 cars that a diesel was clean as a whistle , if not what the hell have we been paying for!

    They are clean as you can possibly get however the cost of keeping them clean far outweighs any saving made in fuel costs.


  • Registered Users, Registered Users 2 Posts: 24,644 ✭✭✭✭punisher5112


    It's to try and cut as much toxic gasses being emitted such as cancerous nox gas.

    Diesel in trucks and buses will be around much longer but cars are slowly moving away.

    Many many people buy without even needing which is worse as they very rarely get to optimum temperature to burn off as much of the toxins.

    Worth knowing that there are these extra costs and someone better with figures may be able to mash up an idea of costs compared to running a fairly economical petrol.


  • Registered Users Posts: 28 pmeade1


    For the record petrol cars generate NOx also and higher levels of C02, in fact the Euro 6 diesel is reported to be cleaner than many petrol cars. Regarding costs. I drive long distance and to be honest diesel is far far more economical, extra costs included than any petrol. That said I don't like having to fork out for emission kit that appears not to work very well in my old car,,DPF's!
    I think diesel is being "marketed" out to make room for electric. In my opinion electric will be worth considering when it matches the range of current cars and when batteries last more than 6-8 years. I wonder how you would get a decent resale for electric with the current battery life..


  • Registered Users, Registered Users 2 Posts: 1,407 ✭✭✭Audioslaven


    pmeade1 wrote: »
    Final note on the DPF . DON'T waste your money on regens or filter cleaning!

    I think you are correct on the DPF cleans. You just can't clean them enough and it is really just a temporary measure. It makes the final DPF replacement cost more expensive.

    Did you use genuine Honda DPF?


  • Registered Users Posts: 28 pmeade1


    I used a genuine Honda in the end for peace of mind!


  • Registered Users, Registered Users 2 Posts: 1,407 ✭✭✭Audioslaven


    pmeade1 wrote: »
    I used a genuine Honda in the end for peace of mind!


    I have a Mazda 3 and while the dpf has not put a light on I cleaned it twice as it had a dpf duration error logged in ecu. It was doing a regen ever 80 km and now I am ever 300km. These cleans have stopped the error and while I used a chemical with a large flow of water, in my opinion I just cleaned the inner part of the dpf. I have got over a year out of it and the car is used for small runs but I give it a good run once a week. The power also came back into the car after the cleans. I think it is hard to clean the whole part of the dpf and as such a new dpf is the best solution long term.

    Your thread is great and fair play to you for updating everyone. I have a civic idtec so I have a concerned interest in your thread


  • Closed Accounts Posts: 20,779 ✭✭✭✭jayo26


    pmeade1 wrote: »
    I used a genuine Honda in the end for peace of mind!

    After I had my problem 2 year ago I had no other issues. The Honda garage cleaned it and did force teen on computer and it lasted 50k I traded it in two weeks ago so won't know how long more it lasts but I'm fully convinced it's a problem that can happen at any time.


  • Closed Accounts Posts: 1,118 ✭✭✭ABC101


    pmeade1 wrote: »
    Final note on the DPF . DON'T waste your money on regens or filter cleaning!

    I tried it all. its doesn't work. A full filter cut and clean lasted about 25K miles , in that time I had to turn off the dpf ! hash light many times using software. Anytime I pushed the power I risked turning on that dreaded light. In the end I had to fork out the 1200 for a replacement DPF. These DPF's seem to be only good for about 100-120K miles. Its a real con considering the cost and all the bull lately telling us that they don't even work!

    honestly I don't know what to be believe these days. You would think with the bloody DPF, The EGR, The Cat, and the Adblue in new Euro6 cars that a diesel was clean as a whistle , if not what the hell have we been paying for!

    A couple of points from my side.

    1) Thanks for sharing the info, both initially and the recent update, I did have my doubts that it was going to work but I was really hopeful that your efforts would be successful, unfortunately it was not to be.

    2) While you may be of the opinion that your efforts at trying to clean a old DPF unit were a waste of time / money, you would never have known if you had not tried. If you had just bought a new DPF years ago you could still have a niggle in the back of your mind... should you have tried other methods prior to replacement?

    3) While 1200 e will burn a hole in most peoples pockets, you should still have made a saving in running a diesel engine car as distinct from a petrol given the high annual mileage. All in all the DPF cost probably would have been covered in the first 12 months of use.

    4) 1200e does not sound expensive for a DPF unit, I would have thought closer to 2000e, unless the quotes I have heard about also included labor? I have heard some cars require enormous labor time as suspension has to be dropped / removed to physically get at the DPF unit. Prehaps it is physically easy to get at the Accord DPF and as such labor costs are much lower?

    5) I'm not sure what you mean about Euro 6 emission control equipment not working? I was under the impression that they do work, but when people remove DPF filters, or the car company decides to cheat then the emission standards are broken.

    It is important to remember that with the recent Volkswagen diesel gate scandal, a number of cars were tested, the BMW X5 met the standard and it was not cheating. The Volkswagen Jetta also met the emission standard (but only on the dyno) and not on a regular road. So it met the standard when been tested.


    Anyway, you reckon around 110K miles and the DPF filter will require replacement, you could probably throw in the fuel injectors as well?


  • Registered Users Posts: 28 pmeade1


    thanks for comments and feedback

    I got about 110-120K miles before my DPF started to give hassle. No Fuel injectors probs so far.

    Besides normal wear the accord has given me the following issues:

    1. DPF
    2. EGR pipe fault ( known issue - but Honda have only a limited warranty on these) real serious issue as toxic gas in cabin).
    3. Rear brake calipers faulty.

    Thinking about getting into a Mazda 6 next ,, Anyone got some feedback on a 2016-> Mazda 6 Diesel ?


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