Engine Fault Repair Needed, Emissions Fault Adblue

[kingy1912]

Adblue vehicle here, 2017, 64k miles 1.6 HDi.

No issues so far, other than warning about low Adblue. Topped up with 10L from Aldi, all good.

No reset required, just top up and drive.

Fill it to the top every 5k or so and keep it topped up if possible. From my experience with the B9 and the K9 if you leave them till the low level indicator comes on a few times they chuck it not long after.

[ShaunM1991]

Hi people, completely new to this whole forum set up… so excuse me if I do something wrong.

3-4 weeks ago I purchased a 68 plate berlingo (older shape) with roughly 80,000 on the clock. The van seemed ok up until yesterday. I had the engine management light come on whilst I was driving to work. One of the lads at work had them plug diagnostic machine that tells you the error code, I can’t remember the exact code that I gave him but it was to with the emission valve/filter. So he cleared the code and said on the drive home have the revs higher than usual to try and clear out the filter. So that’s what I did on the drive home, but still the EML is on.

Then this morning jump in the van, EML light still on and then half way through my drive the UREA and ‘!’ Light both come on. So on my way home I grab some Adblue and put that it in, roughly about 9 litres went in. Driving home with the EML, UREA and ‘!’ Lights all on still. I decide to try and clear the filter again but driving in higher revs for a while then all of a sudden the UREA light is now flashing and a warning sign on the screen saying Emission fault: starting prevented in 700 miles.

Then van also sounds terrible when it starts up even when it isn’t cold, and it seems to have a lot of smoke coming from the exhaust.

Could anyone possibly shed some light on what might be happening??

Thanks

[Sol]

Adblue and DPF filter are completely non related. Sounds like you need a proper scan tool, the generic ones do not work properly on these vehicles.

If you have a fault on the Adblue injector or the pump then clearing the code will not help. Needs diagnosed properly and most little garages don't have the kit or the knowledge.

An Adblue tank with integrated pump costs about £1500 but it may just be the injector is clogged. Or a LIN network fault...you need it professionally scanned, not a mate with an OBD handheld tool.

A vehicle with a DPF will never make any smoke ever, no matter what. And driving at high revs to clear it is a myth. The ECU does it when it needs to, you can't influence it.

If yours is smoking then something is very wrong with the DPF. Maybe the previous owner gutted it. I'd get it looked at properly.

Also, your vehicle is not a K9 if it's the previous shape. It's a B9.

[ShaunM1991]

Adblue and DPF filter are completely non related. Sounds like you need a proper scan tool, the generic ones do not work properly on these vehicles.

If you have a fault on the Adblue injector or the pump then clearing the code will not help. Needs diagnosed properly and most little garages don't have the kit or the knowledge.

An Adblue tank with integrated pump costs about £1500 but it may just be the injector is clogged. Or a LIN network fault...you need it professionally scanned, not a mate with an OBD handheld tool.

A vehicle with a DPF will never make any smoke ever, no matter what. And driving at high revs to clear it is a myth. The ECU does it when it needs to, you can't influence it.

If yours is smoking then something is very wrong with the DPF. Maybe the previous owner gutted it. I'd get it looked at properly.

Also, your vehicle is not a K9 if it's the previous shape. It's a B9.

Thanks for the reply.

Is the van safe to drive do you think or not until it’s been looked at?

[Sol]

Perfectly safe, you can't break it, but when the countdown expires, it will not start again.

[Matt Haigh]

Symptoms sound very like my recent experience, same dash messages/warnings. My Berlingo is at the dealer today will be ready to pick up tomorrow. Apparently the Urea (AdBlu) pump was not working properly and leaking. Extended warranty is going to pay parts and labour for the new pump and I'll have to pay for the diagnostics.

[LukeC]

I bought a 2018 Berlingo just over a month ago, 3 months of warranty (I've been told I can extend this at any time), and I'm considering it. Today, I've just fuelled up with half a tank and by the time I got to the road the yellow triangle came on and the central display flashed up stating an engine fault and something about getting the problem fixed. No reduced power or anything. I've got it booked back to the dealer to have a look Monday, but I want to know if it's a common issue. I can provide photos of the message if required as it seems different to what's mentioned here.

On a lighter note I'm averaging 58.7mpg, and had a best (For 24 hours) of 60.0mpg.

[Sol]

Fault triangle & "Engine Fault" after fuelling is an issue with communication to the Multiplexed Additive Pump on the LIN network communication bus, in the Eolys system (separate from the Adblue system) and it will be awkward to fix. May need the tank unit replaced which is not too hard. But not cheap.

Its around £750 for an aftermarket tank with integrated pump. They can not be had separately. They are about £1250 from Citroen, without fitting costs.

Even getting that code cleared will take full Citroen Diagbox software and the proprietary Actia interface.

An aftermarket OBD scanner can not clear this. It will likely not even see the code. Maybe a pro scanner like snap-on will get the code cleared but every time you put fuel in, it will do this again.

The Body Systems Interface detects the cap being refitted and tells the MA Pump to inject 5ml of Eolys into the diesel tank, when it fails to respond, bam engine fault.

[LukeC]

Thanks Zion. Hopefully the dealer can get it sorted. At least there's still a warranty on it. I have started wondering although I'm not driving super slow, I've been driving very economically, that maybe it had needed some more revs to clear out as it may be being choked up a little bit. I'm more of an "If you can't fix it with a hammer, you have an electrical problem" kinda guy.

[Sol]

No, driving style can't be used to "blow out" or "clear" anything. This fault is on the DPF additive pump, which is designed to make the soot more sticky so the filter catches it.

The car or van will burn off the soot, called a regen, when there is an exact amount in the DPF measured by sensors. You can't influence that process by doing anything at all.

At 26g of soot, or when the differential pressure sensors say it's getting lower flow than required, it will burn itself off. When the ash formed in the bottom reaches 100% then it can't do it any more and will signal the DPF is out of life. It can then be removed and cleaned - approximately 100k miles depending on driving conditions (that's the only thing your driving style can influence - you make more soot quicker by towing, or heavy footing it when cold or up hills while loaded)

The DPF is meant to catch soot, that's it's one job. Not to let it out. (It's a fine steel mesh filter) So it can't be blown clean by the widely mentioned (and completely nonsense) "Italian tune-up" gibberish posted everywhere online.

Just drive it, and the computers will do the rest. Unless something is broken or not communicating. Like you have now.