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Old 07-15-2015, 10:30 PM   #15
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Was yours the NOX sensor also? Had you used any biodiesel?
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Old 07-16-2015, 06:38 AM   #16
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Check engine light , 10 starts remaining

I don't use biodiesel ... As much as possible
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Old 07-16-2015, 08:28 AM   #17
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Mine was also the NOX sensor. I am very careful about not using Biodiesel, although living in Illinois it is sometimes difficult to find non biodiesel. One has to have faith that the absence of a biodiesel sticker on the pump means that your are not getting biodiesel.


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Old 07-16-2015, 09:21 AM   #18
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The 2014 chassis seems to be prone to this issue. It has to do with defetive NOx sensors (two) on either side of the particulate filter. Learned about it on the B-forums. Also read the Sprinter Expediter forums for more DEF related woes. I think BikerBill had this issue with his RT, and the initial code being thrown was a crimped DEF line which caused all sort of grief trying to access and repair. It is not a crimped line! The early 2014's were giving the wrong code and once someone tried the 2013 diagnostic software they got the correct results. I hope Mercedes has updated their software to fix the diagnostic. There is no recall as far as I know and MBUSA seems to be dealing with it on a case by case basis. And no it does not affect other vehicles (I have a 2014 E250 BT Bluetec and it is fine.)

I have a Sprinter Camper Van with the 2014 chassis (RT CS-A) but so far no issues. The RT's require removal of both the fresh and black tanks to access the sensor wiring and some MB service centers may balk at performing this task which I think BikerBill encountered, but then his was mis-diagnosed to begin with... RT's president worked with MB to form a taskforce to address that issue and all authorized Sprinter Warranty shops are obligated to do the repair as both RT as well as Thor I am sure, are certified upfitters. Its just getting the Right diagnosis up front that is critical to a timely resolution.

These are defective sensors and the issue is not related at all to BioDiesel as far as I know. The resolution is to replace and reprogram. It can be a 2000 dollar fix but is covered under warranty.
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Old 07-16-2015, 10:24 AM   #19
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Just to keep the facts straight, my Interstate is a 2014 built on a 2013 Sprinter chassis.


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Old 07-16-2015, 09:54 PM   #20
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I got a P2BAA code today which relates to NOx exceedence, low reagent consumption. I noticed that it was gone after one or two restarts. Hopefully that's the last of it but I doubt it.
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Old 10-20-2016, 08:05 AM   #21
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Just had to have a nox sensor replaced in my unit when I got back from my latest trip. The check engine light had come on during a previous trip but went out before I could get to an MB service center. On this trip it came on when I was about 1/3 of the way through this trip. I knew Def wasn't the problem, checked the oil it was ok, so I continued on my trip. We were gone a little over 2 weeks before we go home, took it to my service center and they replaced the sensor. During the whole trip the check engine light stayed on but there never was a warning about number of starts left. Guess I was lucky.
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Old 10-20-2016, 10:32 AM   #22
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Quote:
Originally Posted by Dalwyn View Post
Just had to have a nox sensor replaced in my unit when I got back from my latest trip. The check engine light had come on during a previous trip but went out before I could get to an MB service center. On this trip it came on when I was about 1/3 of the way through this trip. I knew Def wasn't the problem, checked the oil it was ok, so I continued on my trip. We were gone a little over 2 weeks before we go home, took it to my service center and they replaced the sensor. During the whole trip the check engine light stayed on but there never was a warning about number of starts left. Guess I was lucky.


What year is your rig, and did you spend much time idling to charge batteries or run the inverter? Also how many miles are on it?
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Old 10-20-2016, 11:16 AM   #23
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All these reports of diesel emission problems remind me the early days of gas emission controls back in the 70s.
Me too. I mentioned to my husband the other day that, if we knew 2 years ago what we know now, we'd cough up $36K for a naked Sprinter and we'd design and build our own Class B. To which he replied that the fly in that ointment is that the T1N is probably a stronger platform for what we want, and this is one of the reasons why (no twitchy emissions controls).
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Old 10-20-2016, 12:29 PM   #24
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What year is your rig, and did you spend much time idling to charge batteries or run the inverter? Also how many miles are on it?
My unit is 2015 Grand Tour. I don't idle except at stop lights, inverter is always off, miles are about 11,000 first time the light came on was during a spring camping trip had about 6,000 miles then, but the light went out and did not come back on until this trip.
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Old 11-20-2016, 02:56 PM   #25
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2017 Interstate Grand Tour - 1100 miles on odometer, P2002 error code

Engine check light came on during trip at around 700 odometer miles. No other warnings or messages so continued trip till we got home. Ran an OBD II scanner and found error code P2002 (diesel particulate filter efficiency below threshold B1)! Will take into dealer later this week to diagnose/repair and will report outcome afterwards. Other than check engine light being on, rig drives as if no issues.

Hope this isn't a sign of things to come!
diesel particulate filter efficiency below threshold

Read more at: https://www.obd-codes.com/p2002
Copyright OBD-Codes.com
Diesel Particulate Filter Efficiency Below Threshold B1
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Old 11-20-2016, 04:04 PM   #26
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Check engine light, 10 starts remaining

Quote:
Originally Posted by bob323 View Post
2017 Interstate Grand Tour - 1100 miles on odometer, P2002 error code

Engine check light came on during trip at around 700 odometer miles. No other warnings or messages so continued trip till we got home. Ran an OBD II scanner and found error code P2002 (diesel particulate filter efficiency below threshold B1)! Will take into dealer later this week to diagnose/repair and will report outcome afterwards. Other than check engine light being on, rig drives as if no issues.

Hope this isn't a sign of things to come!
diesel particulate filter efficiency below threshold

Read more at: https://www.obd-codes.com/p2002
Copyright OBD-Codes.com
Diesel Particulate Filter Efficiency Below Threshold B1

Have you inadvertently use biodiesel greater than 5% (higher than B5)? It's very easy to make that mistake.


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Old 11-20-2016, 04:46 PM   #27
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Perhaps the ECM didn't call for a burn-off of the DPF causing the low efficiency reading. The DTC doesn't always point to the component causing the problem. For that one needs the comprehensive troubleshooting fault tree usually found in the factory service manual.
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Old 11-21-2016, 05:55 AM   #28
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Have you inadvertently use biodiesel greater than 5% (higher than B5)? It's very easy to make that mistake.


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Not really sure. Did fill-up at very busy/new Racetrack in Mobile, AL before I left but had been running off previous fill-up from same station (even same pump) for over a week without any problems.
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