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Old 09-11-18, 08:31 PM   #1
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Default Does fresh DPF fluid go through before ECU counter is reset?

I recently fitted a fresh bag of DPF fluid to the reservoir after getting the "P FILTER ADD LEVEL LOW" message.

I still have the message (I've not got the diagbox stuff to reset it with yet) but I just wanted to make sure that the message is just info, and that the DPF feed is not being actively stopped, and then started again after the error is reset?

Am I right in thinking that there's no mechanism that cuts this off, and that the engine just takes the DPF fluid if it's there in its bag?
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Old 09-11-18, 09:35 PM   #2
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Fluid low is just a warning it will still continue to inject fluid however once it thinks it has run out it will stop injecting to protect injector pump and display risk of filter blocking message so you need to reset counters asap
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Old 17-11-18, 03:41 PM   #3
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Fluid low is just a warning it will still continue to inject fluid however once it thinks it has run out it will stop injecting to protect injector pump and display risk of filter blocking message so you need to reset counters asap
Any idea how many miles after the "P FILTER ADD LEVEL LOW" message first appears, before it stops injecting and gives the risk-of-filter-blocking message?
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Old 17-11-18, 03:50 PM   #4
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If its telling you it needs fluid fill it up reset the counter job done why risk more issues !

If you dont get the counter reset it will stop even though it has fluid.
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Old 17-11-18, 03:57 PM   #5
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If its telling you it needs fluid fill it up reset the counter job done why risk more issues !

If you dont get the counter reset it will stop even though it has fluid.
I already filled it up. I can't reset the counter yet because I'm having problems getting the Diagbox software working (see my other thread), and will need to set up a 32-bit virtual machine and reinstall the software before I can try connecting to the ECU and running through the process again.

How much time do I have, here?

When you say "it will stop even though it has fluid", do you mean the car will stop working altogether?

Last edited by Zenid; 17-11-18 at 04:11 PM.
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Old 17-11-18, 07:42 PM   #6
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No car will not just stop, fluid injection will stop as stated above to protect pump from damage.

You will get a risk of particle filter blockage when this occurs as another warning after that you will stand a good chance of blocking DPF and damaging turbo if you continue to drive a significant distance
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Old 18-11-18, 05:00 PM   #7
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Default DPF reset not working - Screenshots

A few hours later, and I've installed a 32-bit version of Windows 7 and installed the Diagbox/PP2000 software from scratch. Diagbox is working and will give a full diagnostic. I went into the setting to renew the DPF fluid, and confirmed that the work had been properly done. It gave a message to say it had registered this change.

So Diagbox says that it's registered my DPF fluid renewal, but I'm still getting the P FILTER ADD LEVEL LOW error message. The attached image shows the screens I went through. The last is where I just checked the value they advised to check, I didn't mess with it though.

Any ideas why the DPF reset didn't work? Is there something else I need to do?
Attached Thumbnails
full-dpf-reset.jpg  

Last edited by Zenid; 18-11-18 at 05:07 PM.
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Old 18-11-18, 05:05 PM   #8
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Clear any codes in engine ecu as they may be logged until cleared. Also worth checking for any other codes such as cap sensor as this will stop a reset.

Some versions also require the removal of the fuel cap for thirty seconds as part of the reset process. However Diagbox normally prompts you to do this.
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Old 18-11-18, 05:45 PM   #9
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Clear any codes in engine ecu as they may be logged until cleared. Also worth checking for any other codes such as cap sensor as this will stop a reset.

Some versions also require the removal of the fuel cap for thirty seconds as part of the reset process. However Diagbox normally prompts you to do this.
I cleared all the codes but they keep coming back.

P15B3 - DPF fluid level low
P1446 - DPF fluid level low
P1445 Additive adding - Says reached limit of particulate output, filter needs changing
P1352 Engine preheating - Another issue I need to sort out

So looks like I need a new filter, though some people here are saying this limit is artificial, and that I can just have it pressure-washed. But would that stop it resetting the DPF fluid counter??

How do I reset these?

Last edited by Zenid; 18-11-18 at 09:17 PM.
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Old 18-11-18, 09:48 PM   #10
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Go into replacement parts or customer preperartion (dependent on diagbox version) and try DPF replacement or service option. This should step through reseting Additive counters and DPF replacement I normally go for a halfway value on DPF load when asked or say it's been replaced. It should then reset

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