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p0139 02 sensor circuit slow response

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Old Yesterday | 09:51 AM
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p0139 02 sensor circuit slow response
My 2020 is showing p0139 02 sensor circuit slow response and p2a01 o2 sensor range performance.

I did have all of the software updates done several weeks ago for the biodiesel deposits in the cp4
 
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Old Yesterday | 10:44 AM
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Found this thread, multiple codes, but includes the P0139.

How's the truck running?

https://www.ford-trucks.com/forums/1...139-p050e.html


 
Last edited by Overkill2; Yesterday at 10:51 AM. Reason: Add to post
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Old Yesterday | 11:17 AM
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Originally Posted by Overkill2
Found this thread, multiple codes, but includes the P0139.

How's the truck running?

https://www.ford-trucks.com/forums/1...139-p050e.html
Thanks, on a 5 mile trip back from the donut shop this morning I didn't notice anything different. Killed it and restarted it and code is still there. Used my Banks iDash to read those codes.
 
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Old Yesterday | 12:41 PM
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Originally Posted by johndeerefarmer
Thanks, on a 5 mile trip back from the donut shop this morning I didn't notice anything different. Killed it and restarted it and code is still there. Used my Banks iDash to read those codes.
No problem...

Yep, love having the built in code reader Dash in my truck... plus the enormous amount of PIDs that can be displayed.

You thinking rear NOx sensor since I do not believe we have O2 sensors...
 
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Old Yesterday | 01:56 PM
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Originally Posted by Overkill2
No problem...

Yep, love having the built in code reader Dash in my truck... plus the enormous amount of PIDs that can be displayed.

You thinking rear NOx sensor since I do not believe we have O2 sensors...
Yes, NOx sensor. I am still under extended warranty. Either that or emissions warranty should cover it.
 
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Old Yesterday | 03:46 PM
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Originally Posted by johndeerefarmer
Yes, NOx sensor. I am still under extended warranty. Either that or emissions warranty should cover it.
If you bought a premium extended warranty like I did for mine, than yeah... it will be covered. How long is yours?
 
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Old Yesterday | 03:53 PM
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I have a 8 year/125k. I am good until March 2027 and I have over 80k miles left on the warranty
 
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Originally Posted by johndeerefarmer
I have a 8 year/125k. I am good until March 2027 and I have over 80k miles left on the warranty
Good for you... I had a 7 year/125k mile warranty. Paid for itself, probably more, for my truck. IIRC my mileage was about 117k miles when it expired...

Let us know where this goes.

Good luck.
 
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