Error Code P0300
Tech Contributor
Joined: Oct 1999
Posts: 41,037
Likes: 9,799
From: Charlotte, NC (formerly Endicott, NY)
Might not be. However, it might be worth asking whether it might be covered due to the low mileage. It could be a loose spark plug wire. When do you get the code? The dealer's scan tool can read the history file which can show where the misfires are occurring. With my P0300 code I saw the misfire was occurring on cylinder 8 at about 5200 rpm at wide open throttle. When the failure was logged it showed there were 64 misfires on that cylinder. All I felt was some sluggishness in how the car accelerated above 100 mph.
Bill
Bill
Last edited by Bill Dearborn; Oct 13, 2019 at 09:50 PM.
Le Mans Master
Joined: Mar 2016
Posts: 9,149
Likes: 3,999
From: 2019 CMG Z06
Last edited by LT4CMG; Oct 13, 2019 at 09:51 PM.
Le Mans Master
Joined: Mar 2016
Posts: 9,149
Likes: 3,999
From: 2019 CMG Z06
Funny, I had the same thought. Trailered it to Corvettes at Carlisle, came home, unloaded, parked for 2 weeks. Reloaded, tailered to a show in Bowling Green, came home. Unloaded, and it started running rough. Figured crappy old gas. But it got worse and some faint knocking started. Took it to the dealer, as my tech was starting to check on the knock and rough idle, it went to hell. Lucky it was already at the dealership
Administrator
Joined: Mar 2001
Posts: 367,986
Likes: 24,717
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Yep, 5 yr/60 K powertrain warranty so your car should still be in warranty for that. Check with the dealer as to what is causing the error code and go from there. Hopefully it is something that would be covered.
Last edited by Vetteman Jack; Oct 13, 2019 at 11:47 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Racer
Joined: Apr 2013
Posts: 305
Likes: 67
From: york south carolina
i had that on my 2017 z06. it happened only once. 3000 miles later still gone. misfires always happen. maybe it was one to many. but its hard to troubleshoot a problem that is no longer there.
Melting Slicks
Joined: Oct 2017
Posts: 2,002
Likes: 326
From: North Carolina