Code P0300?

Tiny
PJM333
  • MEMBER
  • 2013 CHEVROLET CAMARO
  • 6.2L
  • V8
  • 2WD
  • MANUAL
  • 32,000 MILES
The car is off the road every year for 5 to 6 months (on trickle charger) and there are always codes when I restart. I disconnected the negative battery cable and all is well. This year that did not happen.

The car drives fine except when I get the “service stabilitrak”/ p0300" light comes on, the car goes into limp mode for 10 seconds then drives fine. I have been getting the “service stabilitrak / p0300” warning since I bought the car and has been to the dealer multiple times with no answer.

I get the “service stabilitrak” warning light when I drive the car hard, accelerate hard. The spark plugs, coils and fuel injectors have all been changed with no luck.

i did buy a new battery but the codes persist. What else can cause the p0300 code besides plugs coil and injectors?
Thanks
Monday, July 7th, 2025 AT 5:11 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 52,671 POSTS
When P0300 or a misfire occurs, Stabilitrak will often disable itself as a safety measure. The code says random misfire so all cylinders are affected. Vacuum leak, bad MAF sensor, weak or contaminated fuel can cause this. Lets check for vacuum leaks first, please go over this video and tell me what you find.

https://www.youtube.com/watch?v=LRKWV4Are5c&t

Here is a kicker of a guide that tells more:

https://www.2carpros.com/articles/automotive-engine-misfire-code-p0300-causes-and-solutions

Please go over these guides and get back to us.
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Monday, July 7th, 2025 AT 10:48 AM
Tiny
PJM333
  • MEMBER
  • 30 POSTS
Thanks again I will look into it.
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Monday, July 7th, 2025 AT 12:30 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 52,671 POSTS
You are welcome, please let me know.
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Monday, July 7th, 2025 AT 12:33 PM

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