DPF issue

Non-Technical Nissan QashQai chat. Mk2, Mk3
Deleted User 3871

Post by Deleted User 3871 »

I've never had a DPF cleaned but have read on other forums that the DPF can be removed & cleaned, its not always necessary to replace it. Here is a google link to search for DPF cleaning.

https://www.google.co.uk/search?ei=MjYp ... 6OOCilIlgU

The YouTube video is quite interesting using a pressure washer, obviously this involves removing the DPF.

Good Luck
enigmakey wrote: Wed Dec 06, 2017 4:49 pm My Nissan dealership has all sorts of contradictory advice when it comes to DPF. After doing a Service (forced) Regeneration they then advised me to have a motorway run at least once per week. We do that and more usually.

Then when DPF/MIL lights come on, we are to drive it at over 3000 RPM for at least 20 minutes without dropping below that for even a few seconds. That's quite a challenge where we live! Despite this, we have done so and half the time over the last year or so the process has worked first time or second. But then always needs additional work.

We then have ensured we use only the best fuels & low-ash oils, and only drive it for longer distances, and yet still have regular issues. We have been to a DPF specialist, who found that the secondary sensor pipe to the DPF was blocked with carbon.

In time this was not enough and this time the car would not allow a forced regen. At this stage we're best part of £1000 down on this issue over the last 2 years. But it gets worse.

The fault codes on diagnostics then suggest that the cause is that a software update the ECU is needed. On checking further, none is available. The case has all the latest software.

No choice but to go back to Nissan, pay for more diagnostics, and they conculde that the DPF is blocked (thanks for charging for what I already knew) - and that there is only one solution: £2600 for a new DPF filter/unit, including sensors, gaskets, etc and plus yet another oil change!!!!

I escalated the case to Nissan "customer care" (ha!) and all I have is 6+ emails over a week plus saying that someone will get back to me (no timescale & no real insights despite me giving detailed information on the issues). Needless to say, the lack of problem ownership and support in resolving this case means that this Nissan will be the last one I'm ever likely to own.

Does anyone know any way to clean the DPF - which they have personal experience of success in doing so?

User avatar
Gel
Posts: 3265
Joined: Thu May 22, 2014 12:02 pm
Location: Thames Valley UK
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by Gel »

My 2014 model manual has no mention of DPF maintenance, but I believe section added in later models, and the J10 ones too perhaps.
2014-19 J11A-14 1.5dci Ink Blue Tekna owner; now departed for a Mazda CX-5 GT Sport Nav, 2.0L Petrol :D
dani87
Posts: 60
Joined: Fri Aug 22, 2014 11:05 pm

Post by dani87 »

Start car, warm up to temp then drive, dont get in car and drive from cold like everyone does. This will help. Dont drive low speeds in high gear as this loads the dpf. (40mph in 5th)
Post Reply