BMW 530d fault code 2BB100

[MT530d]

Hello everyone,

I own a BMW 530d (great car), but recently, the check engine light came on. I read the car's error codes with BimmerLink and got the fault code 2BB100. I then performed a manual regeneration of the DPF and cleared the fault code, and it stayed off until yesterday. Yesterday, the check engine light came on again with the same fault code. I've only driven 500 km since the last regeneration.

If anyone knows what might be going on, it would be greatly appreciated!

Thanks in advance!

Kind regards,

MT530d

[maxmosley]

...the particulate sensor located downstream of the particulate filter senses carbon content beyond the given limit.

This indicates a leaking filter inset. The ceramic insets tend to break over time due to the high temperature loads during regeneration cycles.

Do Your tailpipes show any carbon deposits?

According to the shop manual both, particulate filter and sensor must be replaced - the latter presumably due to contamination.

The filter change should be registered with the car system.

[MT530d]

Hi Max,

Thanks for your quick reply!

I’ll check tomorrow if there’s any carbon deposits in my tailpipes.

But you think I would have to replace the DPF and the particulate matter sensor?

[maxmosley]

...the filter insets are not replaceable cartridge-type.

Last year a new mandatory emission test was introduced for EUR6-certified cars. A particle-counting device is used to check the carbon level at the tail pipe. Many cars exeed the limit 250.000 p.p.ccm due to broken insets.

There is no way around replacing the filter.

Results with aftermarket items are mixed - so You better opt for an - quite expensive - OEM-part.

A broken filter inset does not impair engine performance, however, highly carbon loaded exhaust may interfer with the SCR-installations located downstream (SCR-catalyst, NOx-sensors) rendering them useless over time - like the particulate sensor as mentioned by the BMW shop manual.

This will result in additional fault entries and probable replacement.

[MT530d]

Hi Max,

I am afriad that I will indeed have to replace the DPF. If you take a look at the attached photos, I think there are soot residues.

I have made an appointment with my dealer, but the earliest available date is 4/10. Is it bad if I continue to driving until then?

[maxmosley]

...the carbon deposits are a sure sign, the inset is broken.

As I wrote: compornents downstream could be contaminated beyond repair (cleaning).

NOx-sensors: They function just like a standard oxygen sensor (lambda sensor) - so cleaning them might be successful as well.

SCR-catalyst: It's inner surfaces are coated with a variety of chemical compounds in order to facilitate the breakdown of the NOx-molecules. I don't know whether these surfaces can be restored.

Particulate sensor: According to the BMW shop manual it must be replaced, anyway.

In order to reduce carbon deposits while driving with a broken filter, deactivating the EGR would be very effective.

Unfortunately on Your G-model is no easy way to do that, because BMW has made it tamperproof - back then it was just pulling a plug. Doing this on Your car, it will go into limp mode.

Another measure to run the engine cleaner ist to switch from standard-Diesel (B7) to synthetics like GTL (GasTolLiquids), HVO100 (HydrotreatedVegetableOil) or ARAL/BP-ULTIMATE.

Maybe this will make You "survive" til October.

[MT530d]

Thank you very much for helping me! I really appreciate it!

Do you have any idea how much this would cost? To replace DPF and sensor?

[maxmosley]

...with an undamaged filter Your tailpipes should look like this (mileage 215.000km)

[maxmosley]

Zitat:

@MT530d schrieb am 4. September 2024 um 11:09:18 Uhr:

Thank you very much for helping me! I really appreciate it!

Do you have any idea how much this would cost? To replace DPF and sensor?

...for current prices You should look here -You can switch it to English:

https://www.leebmann24.com/de/de/page/bmw-spare-parts

LEEBMANN sells OEM-parts, but at somewhat cheaper rates - the filter will sell at approx. 2.000€.

Labour for replacing the filter is a whopping 78AW +3AW (register). 1AW (Arbeitswert = labour unit) = 5min.

The particulate sensor sells at approx. 200€. I would spare that an try first with the old one in place.

You can also opt for an refurbished OEM particulate filter.

For that - and further info regarding the filter issues - You should contact

https://russfilterreinigung.de/

You can switch their website to English, too.

 

 

 

[MT530d]

I also need to go to BMW for a recall on the EGR. Could this be related? Is it possible that the EGR caused the DPF to fail?

[Airaf89]

Zitat:

@MT530d schrieb am 4. September 2024 um 16:22:13 Uhr:

I also need to go to BMW for a recall on the EGR. Could this be related? Is it possible that the EGR caused the DPF to fail?

Yes , because when the egr is broken, there will be no Regeneration of the dpf as far i know .

 

So this could be somehow related if egr valve and cooler are broken or filled with dirt

[maxmosley]

Zitat:

@MT530d schrieb am 4. September 2024 um 16:22:13 Uhr:

I also need to go to BMW for a recall on the EGR. Could this be related? Is it possible that the EGR caused the DPF to fail?

...EGR's only purpose is to reduce the NOx-emissions. This is achieved at the expense of fuel efficiency, engine performance and reliability and comes with carbon rich exhaust.

The higher the EGR-rate the more carbon is produced. In order not to overwhelm the particulate filter, high-pressure-EGR - the dirty one - is restricted to idle and low load.

Anyway, all the carbon ends up in the particulate filter and must be oxidized at more or less regular intervals - that's regeneration.

So, deactivating the EGR will result in fewer regeneration cycles, but it voids the car's legality.

Deactivation saves the particulate filter on my car.

The EGR-recall, you mentioned, deals with engine coolant leaking into the EGR-cooler duct. This might result in an engine fire, so the EGR-cooler plus EGR-valve are replaced.

But this is not in any way related to cracked filter insets - it's the sheer number of regeneration cycles taking its toll.

Ceramic insets are simply not up to the task. Metallic insets are better, but more expensive.

[MT530d]

Thanks everyone! I just got off the phone with BMW. When they replace the EGR cooler, they’re going to check whether the issue is with the filter or just the sensor. I suspect the DPF needs replacing. They also mentioned that the lifespan of a DPF is only 150,000 - 200,000 km, which isn’t a lot. I just reached 165.000km

[maxmosley]

...approx 3.300€ total.

One should consider leasing a pre-owned Diesel on full-coverage-warranty