| 2016 Td6 DEF Quality/Dosing Error - Sensor Issue??? | |
My Dudes!
Still loving the L494 Lever in my L405...
Sorry - this got a little long... raise your hand if you are surprised...
What I am not loving is the fact that I have had a DEF Quality fault that turns into a DEF Dosing Error. 3rd one since I bought the truck in late August 2023.
No pics of the first instance, but it happened long about October 15th - my Indy talked me into new sensors and a NEW DPF to the tune of $2,500. I also had them fill the DEF since it was telling me to add 9Liters(invoice says they put 15L in it...). Fault is gone! (After watching several videos by O'Rileys mobile garage on the University of Tube... I think this was grossly misdiagnosed - PigPiss/cash under the bridge...)
I get a low DEF message November 25th - I have put quite a few miles on with Auburn Tiger Football and Thanksgiving driving. Add 9.5 Liters of DEF...
Jan 5 - say 2,500 miles later the  Fault came back!
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I climb under the truck and detach the DEF Nozzle - it does not look that bad, but grab some hot water and The Mrs. toothbrush clean it and the port where it attaches to the DPF. THOROUGHLY rinse the toothbrush and return it to the cup it was in by the sink.
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These are pre-scrubbing, obviously.
Put it all back together drive it 5-6 miles and the error does not clear, but the message changes:
It went from Quality Issue to now - Dosing malfunction
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Per O'Riley... I go in to my GAP IID and reset the DPF and the Dosing calibration. (Big scary warning that if I did not really swap my DPF failure could result) The next day, drive 20 or so miles to a funeral and the light is off when we come out to go home. I am so HAPPY!
Fast forward to Jan 19 - Fault RETURNS!!!
I look at the fault and the service menu... hmmm same mileage on DEF - I topped this thing off, like necked it on Jan 5. There is no way I only have 203 miles...
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Decide to check the GAP IID -
It thinks I have too much DEF...
Did nothing under the truck - just reset everything through GAP IID... On the 75 mile ride home the fault cleared.
What does the hive-mind think? Do I have bad DEF Level sensors?
How do I get this sorted in a more permanent fashion?!?!?
As Always - thanks for the help! 2006 L322 HSE LUX 4.4NA Jag V8 Buckingham Blue/Ivory - 'Col Reb'
Rolled Yahtzee Aug 2023 222,222Miles
2016 L405 HSE TD6. Santorini Black over Almond. - 'Donna the Diesel'
Only L405 IN THE KNOWN UNIVERSE with an L494 Shift Lever Fitted!
97K at purchase Sept of 2023
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28th Jan 2024 10:28pm
