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Discussion Starter #1 (Edited)
My 17 f250 popped a CEL on and I scanned it with my banks I dash. It said p203B which read reductant sensor circuit range/performance. Anyone else get this and know what it means?
 

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My truck currently has this CEL. Ford wants me to pay for the reductant tank replacement.....we are currently in negotiations for replacement with corporate. This appears to be a ticking time bomb for some 2017 6.7s. Debating a delete.

w.w.w.powerstroke.org/forum/6-7-problems-forum-2017-2019/1366835-starting-have-consistent-electrical-problem.html

ford.oemdtc.com/3260/illuminated-mil-with-dtc-p203b-2017-ford-f-super-duty
 

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So, basically this is the fluid level gauge in the DEF tank reading incorrectly

Being part of the emissions system, I thought that would be covered by the Federal 5 year warranty?
the DEF system would be in that description

The problem with deletes is if the EPA decides to enforce compliance
if you still own the truck, the deleted stuff would have to be put back on or the truck scrapped
we aren't quite there yet -- I suppose it depends on how long we keep our diesels
 

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I think the federal EPA warranty only covers 'light duty' vehicles, and typically only for 2 years or 24k miles (with the exception of certain parts).


w.w.w.epa.gov/transportation-air-pollution-and-climate-change/frequent-questions-related-transportation-air

"The Clean Air Act requires manufacturers of light-duty vehicles to provide two federal emission control warranties: (A) "Performance Warranty" and (B) "Design and Defect Warranty." These warranties are provided by the vehicle manufacturer and apply to used vehicles as well. The warranty period begins from the date of sale to the original owner.

The Performance Warranty covers repairs which are required during the first 2 years or 24,000 miles of vehicle use (whichever first occurs) because the vehicle failed an emission test. Specified major emission control components are covered for the first 8 years or 80,000 miles (whichever first occurs). The specified major emission control components only include the catalytic converters, the electronic emissions control unit or computer (ECU), and the onboard emissions diagnostic (OBD) device or computer. If you are a resident of an area with an Inspection and Maintenance (I/M) program that meets federal guidelines, you are eligible for this warranty protection provided that:

Your car or light-duty truck fails an approved emissions test; and
Your vehicle is less than 2 years old and has less than 24,000 miles (up to 8 years/80,000 miles for certain components); and
Your state or local government requires that you repair the vehicle; and
The test failure does not result from misuse of the vehicle or a failure to follow the manufacturers’ written maintenance instructions; and
You present the vehicle to a warranty-authorized manufacturer representative, along with evidence of the emission test failure, during the warranty period."
 

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2016 and before, you could replace just the def pump/gauge float housing. 2017+, you have to replace the entire tank with everything built into it...
 

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Last year was the first Canadian winter my truck went through and I had a reductant (def) pump heater failure. CEL came on and dealer replaced by taking another unit out of one of the trucks on the lot. There is something about the warranty for the def system not being as long as the powertrain warranty or shorter than the extended warranty coverage. I thought it was 80,000km under my extended plan but can’t remember exactly.
 

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I'm not sure if the OP has an ESP. My dealer rate was 140 USD/hr labor plus the parts. I had mine replaced under warranty. A new unit from tasca parts goes for $250. Job shouldn't be too hard to DIY.
 

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Every emissions related issue I’ve ever sent to the dealer (as a tech at an independent) has been covered under the 8 year/80k mile warranty. I’ve yet to have one rejected that we (as a shop) sent down there. The def tank heater for a 17+ is over 2k list for the part
 

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Discussion Starter #9
Update: motorcrap batteries were going bad. Replaced them both w interstates and haven't had the CEL come back on since. Done several regens since then. So I think it was just the batteries
 
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