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2011 f350 P21B0 code

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Old Jul 4, 2019 | 09:36 PM
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2011 f350 P21B0 code

We went on a trip last weekend and everything was good. I was looking through system check riding down the road and saw my DEF was under half full as per the dash. Never got a message about it just saw it looking thorough the dash stuff while on cruise. Well after we got home I went to move the truck again and got a check engine light with a P21B0 code. And now I can not see my def status in the message center system check. Any thoughts about what to do with this error code ? The truck is a 2011 with 96k on it
 
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Old Jul 5, 2019 | 01:38 AM
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Possibly an issue with a DEF sensor. Generally it's not recommended to refill DEF until you receive the countdown message but it may be worth refilling this time to see if the issue clears on its own.




 
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Old Jul 5, 2019 | 05:29 AM
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I would agree to go ahead and fill, but first I think I would try a couple of drive cycles if you don't use the truck everyday. See if it clears.

In the mean time do as best as you can to check the wiring that you can see for any obvious concerns.
 
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Old Jul 8, 2019 | 08:18 AM
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Had the same code a few days ago. Cleared code and it has not come back. Truck runs great. Will buy a jug of DEF for my trip to the coast with my fiver
 
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Old Jul 9, 2019 | 12:59 AM
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We put def in it but I’m not sure if it has came back or not as I have not driven it. It has an appointment Wednesday at the dealer because apparently there is a customer satisfaction warranty on that system. 11 year 120k is what they told me from ford
 
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Old Jul 9, 2019 | 04:53 AM
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That is CSP 18M01. It is for the reductant heater and sender assembly repair. If they'll claim it under that, you are in good shape. I am unsure if Ford replaces the entire unit for the heater repair (which would include the sensors) or if they replace internal components and reuse the canister (with outside sensors). Based on the almost $900 repair I paid prior to the extended warranty, I guess it's the entire unit.
 
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Old Jul 9, 2019 | 08:15 PM
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Originally Posted by kper05
That is CSP 18M01. It is for the reductant heater and sender assembly repair. If they'll claim it under that, you are in good shape. I am unsure if Ford replaces the entire unit for the heater repair (which would include the sensors) or if they replace internal components and reuse the canister (with outside sensors). Based on the almost $900 repair I paid prior to the extended warranty, I guess it's the entire unit.
Mae shall find out tomorrow
 
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Old Jul 10, 2019 | 01:32 PM
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So ford covered it under warranty. I’m not sure what they replaced but I will get the report and report back.

update:
ford replaced reductant heater and sender assembly
 
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Old Oct 21, 2019 | 01:20 PM
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Hi CFAutoTransport... which warranty covered your DEF heater? Thanks!
 
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Old Oct 21, 2019 | 01:37 PM
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Originally Posted by aggiedave98
Hi CFAutoTransport... which warranty covered your DEF heater? Thanks!
CSP 18m01 I believe. That’s the one I told them and then they said it was under warranty after they diagnosed it
 
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Old Oct 21, 2019 | 01:50 PM
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@CFAutoTransport , thanks! I actually did find that earlier, but my 2014 F250 doesn't show covered. What year and model is yours?

https://ford.oemdtc.com/3768/custome...d-f-super-duty

SUBJECT: Customer Satisfaction Program 18M01
Certain 2011-2012 Model Year
F-250 F-250
-
F-550 F-550
and 2013-2015
F-450 F-450
-
F-550 F-550
equipped with a
6.7L Diesel 6.7L Diesel
Engine Engine
Reductant
Heater Heater
and Sender Assembly Repair
 
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Old Oct 21, 2019 | 02:10 PM
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It’s a 2011
 
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