2010 Mazda 3 2.2D dpf problems

**krazylegz** · 22nd May, 2018, 03:13 PM

Hi all the missus has a 2010 Mazda 3 2.2D ( 150 ) which is giving me a headache.

Its is keep failing dpf regens so the engine management light is on, traction control light is on and dpf light is flashing.

I read that sometimes those combinations are because it needs service and the oil has become degraded with fuel getting dumped into the oil, so I give it a service with new low ash 5/30 C1 oil and new filter and reset the lights with the wire to ground pressing the accelerator truck, it come back on a few mins later.

Ive checked the rubber pipes to dpf pressure sensor and they look fine and not perished, so next step is to try the old jet wash trick by hoping to jet wash all the crap out, failing that it will be getting mapped and dpf deleted from the ecu.

Does anyone know if there is a way to test the 4 sensors in the dpf or test the pressure sensor before I go down the remapping route? Or if there is any things that commonly fail causing the dpf to stop regens?

thanks

lee

**mikroel** · 22nd May, 2018, 03:21 PM

if DPF regeneration starts and does not end several times, then this type of problem appears. The solution is to remove the DPF and its manual cleaning. You can use Coca-Cola as the cheapest cleaning agent.

**krazylegz** · 22nd May, 2018, 03:25 PM

Coca Cola? Never heard of that one. Jet wash it through then pour coke in it? Like a 2 litre bottle worth?

**wbart** · 22nd May, 2018, 05:53 PM

Reset you OIL change in engine ecu?

Wysłane z mojego SM-G390F przy użyciu Tapatalka

**autoden** · 22nd May, 2018, 06:13 PM

IF you go down the remap road, your asking for trouble. For a start you can kiss goodbye to a M.O.T. A grand fine from plod and hey you give all the kids lung cancer. Just get it fixed.

**krazylegz** · 22nd May, 2018, 08:20 PM

Originally Posted by wbart

Reset you OIL change in engine ecu?

Wysłane z mojego SM-G390F przy użyciu Tapatalka

Yes I did mate

**wbart** · 22nd May, 2018, 09:08 PM

What program you reset ecu engine oil

Wysłane z mojego SM-G390F przy użyciu Tapatalka

**krazylegz** · 22nd May, 2018, 10:46 PM

Originally Posted by wbart

What program you reset ecu engine oil

Wysłane z mojego SM-G390F przy użyciu Tapatalka

None, used the known Mazda trick of a wire from a terminal in the fuse box to ground then pumped the pedal 5 times

**Gav44** · 22nd May, 2018, 11:08 PM

Dont know a lot about Masdas but can you not get Delphi OBD scanner and try a forced regen.
I know you can with Vauxalls with Opcom scanner.

Have you had trouble before with DPF regens ?

**wbart** · 23rd May, 2018, 04:43 AM

Check auto with ids or forscan

Wysłane z mojego SM-G390F przy użyciu Tapatalka

**krazylegz** · 23rd May, 2018, 02:09 PM

Originally Posted by wbart

Check auto with ids or forscan

Wysłane z mojego SM-G390F przy użyciu Tapatalka

thanks mate I will, I didn't realise forscan worked, I have it too but never thought of trying it

**teamtuner** · 23rd May, 2018, 02:31 PM

coca cola...cleaning agent....UHH....what about caramel from coke?...will fuccc dpf at first hot gas....solution is read ecu,and dpf off with mechanical work of dpf ceramic also...

there is no solution to clean dpf at "home"...see here more...
http://www.russfilterreinigung.de/en/reinigung.html

**autoden** · 23rd May, 2018, 07:11 PM

Forscan will do the job m8, i use it a lot. Just keep in mind though, its not possible if you have fault codes in pcm.

**demonoiler** · 23rd May, 2018, 08:46 PM

a customers mazda wouldnt regen due to oil level too high..... it has to be no higher than half way between hi and lo..

**krazylegz** · 24th May, 2018, 04:52 PM

Thanks for the help lads got it sorted by using forscan. Had to clear the fault codes in the PCM, clear the learned values of the DPF to keep the light off long enough to get the static regen started. Took 3 attempts but did get there in the end, so I've got some more new oil and filter to change the oil again since it more than likely dumped diesel into it with the 2 failed attempts.

Now the only fault showing in the PCM is something about injectors need learned, is that something that can be done with forscan or is it a dealer job?

cheers