P0071 overhead good, Live data -40

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02-12-2024 | 09:29 PM

SLD1016

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P0071 overhead good, Live data -40

Like the title says, I keep getting a P0071. The overhead console reads correct, but looking at live data on scan tool shows -40. I have replaced the sensor and pigtail. Any thoughts/suggestions? Thanks!

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02-13-2024 | 09:44 AM

HeyYou

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From: Clayton MI

What are you driving?

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02-15-2024 | 08:24 AM

SLD1016

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Lol, that would probably help! Stock 2005 2500 crewcab 4x4 Cummins/AT. Thanks

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02-15-2024 | 09:21 AM

HeyYou

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From: Clayton MI

Is there more than one sensor??? -40 is usually what you get when the sensor has failed open..... Wonder if it's just a bad connection somewhere, that the PCM isn't getting the correct feed?

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02-15-2024 | 10:37 AM

SLD1016

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Could be, but why would the overhead console display the right temp? If I disconnect the sensor the overhead reads 130F EDIT: with the sensor unplugged the overhead console reads 130F and the live data reads -40F

Last edited by SLD1016; 02-15-2024 at 11:11 AM.

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02-15-2024 | 01:47 PM

HeyYou

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From: Clayton MI

Quote:

Originally Posted by SLD1016

That kinda reinforces my thought there is another sensor somewhere.....

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02-19-2024 | 09:33 PM

SLD1016

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Anyone have the wiring diagram for ambient air temp circuit they can share? Thanks

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P0071 overhead good, Live data -40

P0071 overhead good, Live data -40

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