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Old Nov 30, 2020 | 02:53 PM
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emission code

I got a P20 code. Question what did you do to the truck to fix it? Did it just go away after a few key cycles? I add some DEF. It was almost 3.5 gallons low. Truck did a exhaust clean about 100 miles ago. Truck seems to run fine. 15 F250 6.7
Please move to appropriate section. Thanks
 
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Old Nov 30, 2020 | 03:25 PM
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Helps when the actual code is given.
 
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Old Nov 30, 2020 | 06:42 PM
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There are at least 100 P20* DTCs.
 
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Old Nov 30, 2020 | 06:47 PM
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There is no P20 DTC......a DTC consist of a letter and 4 digits....On some DTC's, there might be a qualifier attached after the 4 digits separated my a colon (.
 
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Old Nov 30, 2020 | 06:59 PM
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Here are a few of the P DTC's that start with "20"





 
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Old Nov 30, 2020 | 07:02 PM
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But not always four digits just to be complicated, such as P208A.
 
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Old Nov 30, 2020 | 07:39 PM
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Originally Posted by kper05
But not always four digits just to be complicated, such as P208A.
A is a digit since Ford and other car companies uses base 16 numbering system for the DTC's in the OBDII scheme of things,

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
 
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Old Dec 1, 2020 | 09:11 AM
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My code reader just gave me a P20** no numbers or letters. I was assuming 00.
 
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Old Dec 1, 2020 | 03:29 PM
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Originally Posted by The Bone
My code reader just gave me a P20** no numbers or letters. I was assuming 00.
Time for a better code reader!

My truck decided to throw this one today with only 49k on the clock...........Tis The Season......I'm guessing faulty DEF Heater because today was the first day this season I drove the truck in below freezing temps.

 
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Old Dec 1, 2020 | 05:25 PM
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Originally Posted by The Bone
My code reader just gave me a P20** no numbers or letters. I was assuming 00.
I would assume the ** are letters and not 0's as your code reader can display 0 through 9.
 
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Old Dec 1, 2020 | 06:18 PM
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Most of the P20* DTCs ending with two letters are reductant/SCR/exhaust aftertreatment related.

I agree, a great time for an improved trouble code reader.
 
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Old Dec 1, 2020 | 06:36 PM
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Might be like dirthawg and you have a DEF heater problem. Have the dealer check Oasis to see if your truck might be covered for the extended warranty on the DEF heater.
 
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Old Dec 2, 2020 | 09:04 AM
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Thank you all for the heads up. I will call dealer to get a appointment.
 
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Old Dec 4, 2020 | 03:15 PM
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Well DEF heater is toast. They quoted me a price of $1,600 to fix it. I was floored. Ford website is down so they couldnt tell me if i was under that extended warranty. Part is $350 if I install it myself. It looks like so much fun to do this job. LOL Not going to pay $1,600 for something I can do myself. Bad part is I just topped off the tank so she b full.
 
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Old Dec 4, 2020 | 04:06 PM
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Originally Posted by The Bone
Well DEF heater is toast. They quoted me a price of $1,600 to fix it. I was floored. Ford website is down so they couldnt tell me if i was under that extended warranty. Part is $350 if I install it myself. It looks like so much fun to do this job. LOL Not going to pay $1,600 for something I can do myself. Bad part is I just topped off the tank so she b full.
I think mine is toast as well. How many miles on your truck?

I didn't even bother checking to see if its covered under warranty or not. Ordered a new OEM heater from White Bear Lake Ford $285 and about $15 for shipping. I can fix it myself when it's convenient over the weekend and not have to be without the truck for a day or more.

Here is a good video detailing the replacement.

 
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