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Continuous NOx sensor issues

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Old Mar 15, 2021 | 09:58 AM
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Jmsal88
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Continuous NOx sensor issues

2016 F250 having a reoccurring issues with the NOx sensor. Been to the dealership 4 times for the same issue each time they say the NOx sensor seems to be workin properly and the levels are fine, but they end up replacing the sensor just to get it back on the road. It’s good for few weeks or few months and then happens again.Truck is still under factory warranty only 55k miles. Anyone ever seen this before? Does it sound like a pcm issue? Or would full delete fix the issue?
 
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Old Mar 15, 2021 | 10:46 AM
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Originally Posted by Jmsal88
2016 F250 having a reoccurring issues with the NOx sensor. Been to the dealership 4 times for the same issue each time they say the NOx sensor seems to be workin properly and the levels are fine, but they end up replacing the sensor just to get it back on the road. It’s good for few weeks or few months and then happens again.Truck is still under factory warranty only 55k miles. Anyone ever seen this before? Does it sound like a pcm issue? Or would full delete fix the issue?
What issues are you having? Why does the service department think the NOx sensor is to blame?
 
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Old Mar 15, 2021 | 11:23 AM
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Originally Posted by redford
What issues are you having? Why does the service department think the NOx sensor is to blame?
the code is for the NOx sensor or so they say. Exhaust fluid system fault light comes on 50 miles to limp mode
 
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Old Mar 15, 2021 | 01:21 PM
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Originally Posted by Jmsal88
the code is for the NOx sensor or so they say.
So you don't know the actual error code?

Exhaust fluid system fault light comes on 50 miles to limp mode
Isn't that supposed to happen when you run low on DEF?

 
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