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  #13  
Old 09-30-2014, 12:36 PM
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Re: how does dealer fix DPF 100% full ??

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Originally Posted by netboy View Post
Regens and DEF have nothing to do with each other. Regens occur when the PCM notices a specific maximum difference in back pressure around the DPF. DEF is continuously injected into the exhaust stream and the dosing amount is changed based on the NOx/O2 sensor readings downstream the CAT.

Thanks for the education! This is my first diesel ever, good info to know as I was definitely assuming they were related processes!

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Old 09-30-2014, 12:37 PM
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Re: how does dealer fix DPF 100% full ??

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Originally Posted by ExcursionDiesel View Post
The DPF and DEF are unrelated. DEF usage is part of the SCR (Catalytic Converter) and isn't part of the DPF and its regeneration process. SCR is happening all the time and DPF regeneration occurs as needed based on back pressure sensors. If you are driving 20 miles above 50 mph routinely, your vehicle will regen often enough to never see a message.
As well, thanks for the education!
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Old 09-30-2014, 02:20 PM
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Re: how does dealer fix DPF 100% full ??

Does anyone happen to know if we see an EVIC 'regeneration in progress' message everytime the dpf regens? Or does it sometimes happen without triggering the message on the dashboard. Thx.
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Old 09-30-2014, 03:24 PM
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Re: how does dealer fix DPF 100% full ??

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Originally Posted by Goonbash View Post
Does anyone happen to know if we see an EVIC 'regeneration in progress' message everytime the dpf regens? Or does it sometimes happen without triggering the message on the dashboard. Thx.
No message. Jeep keeps it a secret. Some owners use an ODB device and App to monitor the exhaust temperature to get an idea of when a regen is happening. Some say they notice the EVIC fuel economy drop during the regen.
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Old 09-30-2014, 03:30 PM
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Re: how does dealer fix DPF 100% full ??

Thanks. During the first 6000miles i got the EVIC message at least 4 or 5 times 'continue dtiving regen in progress'. In the last 2000 miles, since a 'reductant pressure too hi' CEL code and subsequent reflash tsb, i havent gotten the regen message and my def gauge hasnt moved at all.
Seems like that reflash to correct false cel codes badically deactivated my def, which is fine by me.....just wanted to make sure it didnt effect my dpf regen. But i got horrible gas mileage today on the freeway so maybe it was regening..lol.
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Old 09-30-2014, 07:12 PM
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Re: how does dealer fix DPF 100% full ??

Yep, in Oz we get the message, seems that the US ones didn't, but I think the latest flash update for the DPF issues has changed a few things with display of warnings, etc.... maybe.
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