risk of particle filter clogging, new pat tank

[hofhomer]

Good afternoon all members, I've recently purchased a 2012 berlingo van with 96k on the clock.

Everything was running fine, until I topped up with diesel to travel home from the garage. Straight after refuelling I got the risk of particle filter clogging. 

Its now with my own mechanic back in my home town and he's advised that the PAT tank is brand new and not priming or communicating with is diagnostics program. Assuming that the garage who sold the van replaced before resale. What advise would you give? Does the new tank need reprogramming by a citroen dealer?

[Sol]

Yes, it needs coded - well at least by Citroen Diagbox OEM software using the replacement parts menu.

(Aftermarket diagnostics are unlikely to work for this function, most don't.)

Dealers have it and some other independent PSA specialists do. People like myself have it too and if you are handy with a laptop then you can get your own from eBay but it's now getting on for £175 for a pirate kit, and the dealer will maybe do it for around £300 so it's still a saving.

Plus they are VERY likely to refuse to code a part that they did not fit.

The fault you have can be a failure of the LIN network bus, and may not be resolved by coding the tank in. Just so you know there may be more to this than you think.

[hofhomer]

Yes, it needs coded - well at least by Citroen Diagbox OEM software using the replacement parts menu.

(Aftermarket diagnostics are unlikely to work for this function, most don't.)

Dealers have it and some other independent PSA specialists do. People like myself have it too and if you are handy with a laptop then you can get your own from eBay but it's now getting on for £175 for a pirate kit, and the dealer will maybe do it for around £300 so it's still a saving.

Plus they are VERY likely to refuse to code a part that they did not fit.

The fault you have can be a failure of the LIN network bus, and may not be resolved by coding the tank in. Just so you know there may be more to this than you think.

Thank you kindly, that confirms my thoughts. I was unaware that a new tanks been fitted until my mechanic investigated the fault. Would this cause my particle filter warning? I assume refuelling triggered the error too? I'm really good with tech, have you got a link or the tools I need to reprogram?

[Sol]

You need to buy the Diagbox kit with Actia full-chip rev-C adaptor (multiplexer) from eBay, no freebies available, as you need the OEM Actia adaptor, others do not work.

Then you need to patch the software from version 7.0 to 7.62 and stop. After that it's usable on the vehicle.

It's possible that coding it will not fix this, as chances are you have a bad LIN comms bus between the BSI and the multiplexed additive pump.

Do some research on YouTube and find out all you can about Diagbox.

The possibility is they had the same fault already, changed the tank and it didn't fix it. The BSI detects you taking the fuel cap off and instructs the Eolys pump to inject 5ml of fluid into the fuel tank. When it doesn't respond, this fault is thrown.

The PAT fluid as you call it, is needed to make the soot sticky so the DPF catches it. This doesn't affect regeneration but the ECU will eventually drop into limp mode if this system isn't working.

[hofhomer]

You need to buy the Diagbox kit with Actia full-chip rev-C adaptor (multiplexer) from eBay, no freebies available, as you need the OEM Actia adaptor, others do not work.

Then you need to patch the software from version 7.0 to 7.62 and stop. After that it's usable on the vehicle.

It's possible that coding it will not fix this, as chances are you have a bad LIN comms bus between the BSI and the multiplexed additive pump.

Do some research on YouTube and find out all you can about Diagbox.

The possibility is they had the same fault already, changed the tank and it didn't fix it. The BSI detects you taking the fuel cap off and instructs the Eolys pump to inject 5ml of fluid into the fuel tank. When it doesn't respond, this fault is thrown.

The PAT fluid as you call it, is needed to make the soot sticky so the DPF catches it. This doesn't affect regeneration but the ECU will eventually drop into limp mode if this system isn't working.

Thank you kindly, would a lin bus communication fault through up an error code on diagnostics? What's more frustrating is that the vans literally just been to citroen as the stop/start needed reprogramming and the dealer who sold me the van wanted every fault cured.

My mechanic says he can not communicate with the tank, but is this because of a lin bus fault or incorrect diagnostics software? Hoping its not going to be another main dealer fix. What would you personally suggest I do first?

[Sol]

Could be his kit, or the LIN bus itself. All systems are only accessible via CAN bus, so regardless of it being on the LIN bus, the BSI is the network bridge, multiplexer and manager of all other networks. All data and systems require access given by the BSI, over the correct CAN bus, of which there are 7 different buses. This is why aftermarket scanners don't work well.

I have the same issue, I coded the tank and pump in with Diagbox 9, it still faults every time I fill up - so I coded the pump in yet again and put a plastic fuel cap in so it doesn't know the cap has been taken off, as there's a magnetic pickup so the BSI knows the cap had been off. Then it tries to run the Eolys pump.

With a plastic cap it works for a lot longer than the OEM cap, but it faulted tonight after the 4th tank.

Pain in the arse these systems. Good luck, you're going to need it.

[hofhomer]

Could be his kit, or the LIN bus itself. All systems are only accessible via CAN bus, so regardless of it being on the LIN bus, the BSI is the network bridge, multiplexer and manager of all other networks. All data and systems require access given by the BSI, over the correct CAN bus, of which there are 7 different buses. This is why aftermarket scanners don't work well.

I have the same issue, I coded the tank and pump in with Diagbox 9, it still faults every time I fill up - so I coded the pump in yet again and put a plastic fuel cap in so it doesn't know the cap has been taken off, as there's a magnetic pickup so the BSI knows the cap had been off. Then it tries to run the Eolys pump.

With a plastic cap it works for a lot longer than the OEM cap, but it faulted tonight after the 4th tank.

Pain in the arse these systems. Good luck, you're going to need it.

So is your Eolys pump also faulty? And you are continuing to drive without the additive added on fueling up? I assume the diesel cap only goes on one way? Turn the key, remove, push back in and lock? Just trying to rule everything out. Regarding the software do you just purchase from ebay? I'm thinking get the software and diagbox for ant future issues.

[Sol]

There's nothing you can do with the cap. I replaced the OEM one with a plastic cap but after 4 tanks, bam, back it came.

I have a proper Citroen Actia interface, not a Chinese copy. The software I posted on the forum for anyone who already had an interface.

You should buy the full kit off eBay and see how you get on. Best of luck. We can only help so much on a forum.

[hofhomer]

There's nothing you can do with the cap. I replaced the OEM one with a plastic cap but after 4 tanks, bam, back it came.

I have a proper Citroen Actia interface, not a Chinese copy. The software I posted on the forum for anyone who already had an interface.

You should buy the full kit off eBay and see how you get on. Best of luck. We can only help so much on a forum.

So am I correct in thinking your pump isn't working too? Are you adding your addictive into the tank when refuelling? 

Regarding the software is it the 7.57 link you posted? Also can you share a link on which diagbox cable to purchase. Plenty of different versions on ebay.

[Sikez2012]

Would the magnetic strip still send a signal to the BSI under this scenario,

You use a jerry can and fill it up in the morning without unlocking the van just open by inserting the key into the fuel cap lock and refueling from the jerry can without putting the ignition on or opening the doors?

Just more curious than anything else.