Check engine light flash while on track. Road america

[Vettel-ish]

Notice it doing this is my last session. Only did it for like 5 secs then went off. Did not come back on. If I start the car now. No light.
Here are my gauges after session.

Thoughts? The diff seems super hot.

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[Vettel-ish]

@honeybadger thoughts?

 

[pilotgore]

Notice it doing this is my last session. Only did it for like 5 secs then went off. Did not come back on. If I start the car now. No light.
Here are my gauges after session.

Thoughts? The diff seems super hot.

If you get a code reader, the answer will likely be stored in permanent codes. Otherwise, it’d just be a guess.

 

[pilotgore]

Notice it doing this is my last session. Only did it for like 5 secs then went off. Did not come back on. If I start the car now. No light.
Here are my gauges after session.

Thoughts? The diff seems super hot.

Did you have a power reduction associated with the CEL?

 

[Vettel-ish]

Did you have a power reduction associated with the CEL?

None that I could tell

 

[pilotgore]

None that I could tell

Probably not rear end or transmission overheat, as those will throw a check engine light and have a power reduction. I’m betting on coolant or oil over temp. If you’re still at the track, ask around, I bet 50% of everyone there has a code reader.

 

[Vettel-ish]

Well... How bad is this.

 

[pilotgore]

Well... How bad is this.

Well... How bad is this.

Could be any number of things. Have any work done on the car recently?

 

[Bojan123]

Well... How bad is this.

I had the P0300 code. My situation was different (not on track, just street driving) but what happened to you sounds like exactly what happened to me. Light came on, it flashed for like 5 seconds and turned off. I didn't know if the car was good or not because it felt fine afterwards. Bought an OBD2 and I got the P0300 code also. I made a post last week or the week before but I didn't update it. Looking at your problem I should have done so. Sorry about that.

I took it to the dealership, they told me that the code came on due to too much voltage going to the battery. Upon start up, the dealership noticed that the power steering goes out temporarily and car will need be restarted to get it to work. They told me it might be awhile before they can figure out what's wrong.

If you have electrical issues like me it could be the same reason (too much voltage). I know its not much, but I don't really know what else to say because I am not the best when it comes to car issues. I hope I was at least able to help a little. When I asked, people told me that the P0300 code isn't a specific code so there are a lot of possibilities.

I found this website when I was looking for possibilities, it might help you out https://www.700r4transmissionhq.com/p0300-ford-mustang/ When I looked for P0300 codes relating to the GT350, I saw alot of talking about emissions and catalytic converter issues. The code went off though which I don't think is normal.

For reference I have a 2020 GT350

 

[Tank]

Well... How bad is this.

From the Helm for the ‘16…
https://www.mustang6g.com/forums/th...re-at-your-own-risk.89612/page-6#post-2373331

 

[Proshop]

Was your gas light on when the CEL blinked?

 

[Vettel-ish]

Was your gas light on when the CEL blinked?

Negative, well I don't think so.

 

[Proshop]

Negative, well I don't think so.

I had the same code pop on my 2021 GT and the dealer said it could have been due to low fuel while I was doing full WOT pulls (Roush SC installed). It’s also states that could be one of the many reasons in the link Tank shared above and since I saw you had gas light on I figured I’d ask.

 

[Vettel-ish]

Drove the car home the hour and a half from road america. No issues at all. Still pulling hard as always.

 

[honeybadger]

I’ve had this issue a few times - it’s always been related to an electrical issue of some sort. It’ll be the first code to pop up when a cylinder is misfiring - even when it’s only one that is having issues. When I had my injector and coil pack connections short out (separate occasions), I got this code first (both times). Later, the individual codes popped up when it happened enough to become a real issue.

I actually just had it last track day when a bolt holding in the #3 coil pack come out and the coil pack started to float up and cause an intermittent connection with the spark plug. Even though there was only one cylinder giving me issues, it threw this code.

In your case, I’ll bet you have a similar issue - some electrical connection related to ignition or fuel causing very intermittent issues.

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