C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace

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Old

Mar 2, 2024 | 09:35 AM

#1

wood78221

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Racer

Joined: Jun 2020

Posts: 274

Likes: 43

From: Vestavia Hills, AL

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P0300

Anyone had this code displayed on the OBD2 scanner without any symptoms? I know it's a box of worms or so it seems.

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Old

Mar 2, 2024 | 10:22 AM

#2

Vette_DD

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Joined: May 2004

Posts: 82,175

Likes: 1,319

From: McKinney TX

St. Jude Donor '21-'22-'23-'24

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P0300 Engine Misfire Detected ECM

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Old

Mar 2, 2024 | 10:28 AM

#3

kestell123

Racer

Joined: Dec 2018

Posts: 498

Likes: 211

From: Wisconsin

2023 C6 of the Year Finalist - Unmodified

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If this is the first occurance I would clear the code and see if it returns. If it returs you will need to look further into it.

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Old

Mar 2, 2024 | 10:54 PM

#4

DrKrieger

Drifting

Joined: Apr 2021

Posts: 1,935

Likes: 1,127

From: Peoria, AZ

2023 C6 of the Year Finalist - Modified

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Check your plug wires for good contact at both ends of the plug wires. You may want to pull the plugs to see how they are burning, and make sure the gap is proper. Also, once you do this approach, then disconnect the battery for 30 seconds or so, then re-connect, start the car, and see if the code clears by resetting the ECU .

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