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Old 1 Week Ago   #1
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DPF problem, again. P1206.

DPF problem again.

Here's the history:

53k. Error code P1206 (Particulate filter). Engine failure. Fixed by cleaning EGR, dismantling EGR solenoid, clean MAP sensor, inspect MAF and force regen.
65k. Error code P1206 (Particulate filter). Engine failure. Fixed by cleaning EGR, dismantling EGR solenoid, and force regen. (DPF - Normal clogging - 88%)
66k. Error code P1206 (Particulate filter). Engine failure. Cleared fault and force regen. (DPF - Normal clogging - 94%)

It's now going OK but it surely won't last.

Am I missing something? Is there something else I should look at?

Cheers

Ron
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Old 2 Days Ago   #2
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Re: DPF problem, again. P1206.

Hi,

At the moment it's running fine, a friend suggested that I should add a tin of BG 244: Fuel System Cleaner to a tank of diesel.

Is this stuff any good, is it snake oil? Is there anything else worth trying?

Cheers

Ron
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Old 2 Days Ago   #3
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Re: DPF problem, again. P1206.

Does look like you have an underlying issue. Have you checked the following:
Oil change counter?
Is the oil level OK (going up is not good)?
How long since last oil change?
Any smell of diesel in he oil?

DPF pressure reading?
How long since last regeneration?
Is the fuel consumption normal?

Robert G8RPI.
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Old 1 Day Ago   #4
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Re: DPF problem, again. P1206.

Hi Robert,

Thanks for your help.

I tend to agree with you that there is some underlying issue.

Answers to your questions:

The oil is due for a change in October, the counter reads 5, the degradation level is 65%, there's no smell of diesel in the oil.

I took an MES screen grab after I did a forced regen. It shows the differential pressure sensor at 17mBar. Clogging at 81%. Fuel consumption is normal.

Would you think that it could be down to an intermittent pressure sensor, which works most of the time and occasionally gives a spurious reading creating the P1206 error?

Many thanks

Ron
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Old 1 Day Ago   #5
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Re: DPF problem, again. P1206.

Hi,
It may be a faulty sensor or blocked or leaking pipe between DPF and sensor.
You cn use the recording / graphing function of MES to monitor the pressure and rpm while driving (don't watch the screen while driving). You can review the graphs later to see if there are any odd readings.

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