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Error code p31e8

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Old May 1, 2021 | 10:49 AM
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Default Error code p31e8

Does anyone know what code p31e8 is?
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Old May 1, 2021 | 10:54 AM
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That code does not show up in chevy error codes
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Old May 1, 2021 | 11:08 AM
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Originally Posted by johnodrake
That code does not show up in chevy error codes
yea but it shows up as the code in the 3 scan tools I have used
on star ran the error code for me and got the same code but they have no idea what it is as its not in his system

Last edited by Billy20; May 1, 2021 at 11:42 AM.
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Old Dec 6, 2021 | 10:56 AM
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I think its NPP valve related, I got the same error code when I fitted the Borla exhaust
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Old Dec 6, 2021 | 11:09 AM
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DTC P31E8 - Exhaust Flow Control Valve Stuck Open Bank 2
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Old Feb 16, 2022 | 11:17 AM
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Just had this P31E8 code show up on my new 2022 with only 30 miles on it. If it is NPP related, would it be worth clearing the code and cycling in and out of Sport to exercise the valve? Give it a little "break in" :-)
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Old Mar 10, 2022 | 06:50 PM
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Following
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Old Mar 10, 2022 | 07:05 PM
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Originally Posted by RedMistC8
Just had this P31E8 code show up on my new 2022 with only 30 miles on it. If it is NPP related, would it be worth clearing the code and cycling in and out of Sport to exercise the valve? Give it a little "break in" :-)
Makes sense. Worth a try. Keep us posted.
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