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Check engine lite?

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Old Jun 23, 2024 | 02:42 PM
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From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
Default Check engine lite?

My wife's bosses 23 HTC threw a check engine lite
I extracted the following codes P0420. P2270 U1611
Care to comment ? Car runs normal 5000 miles !

Last edited by BPHORSEGUY; Jun 23, 2024 at 07:34 PM.
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Old Jun 23, 2024 | 02:47 PM
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From: Dove Mountain, AZ
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Those are for catalytic convertor and O2 sensor....

Was the exhaust system recently changed out?

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Old Jun 23, 2024 | 03:05 PM
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From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
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Originally Posted by tadda
Those are for catalytic convertor and O2 sensor....

Was the exhaust system recently changed out?
No the exhaust was not recently changed out.
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Old Jun 23, 2024 | 05:53 PM
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From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
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I reset the lite figuring that if an O2 sensor or wiring failed, or cat failed, or intake leak the lite would comeback very soon as these thimgs dont fix them selves. The Bossman only had time to do 32 miles and 2 ignition cycles but no lite so far!
He did admit to inadvertently running the gas down to almost zero twice with the lite coming on with an almost empty tank
Could watery/ bad gas from the bottom of tank be a factor ?
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