2022 Pontiac P0300: What It Means & Is It Safe to Drive?
P0300 on the 2022 Pontiac: Random/Multiple Cylinder Misfire Detected. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The PCM has detected misfires across multiple cylinders. This can cause damage to the catalytic converter if driven for long.
Common causes on the 2022 Pontiac
- Worn spark plugs or ignition coils
- Clogged or bad fuel injectors
- Low compression
- Vacuum leak, bad MAF, or fuel delivery issue
Symptoms
- Check Engine Light (often flashing under load)
- Rough idle, shaking, loss of power
- Possible smell of unburned fuel
Typical fixes
- Replace spark plugs and coils as needed
- Clean or replace fuel injectors
- Fix vacuum/fuel issues
- Compression test if no obvious cause
Repair cost range
For a 2022 Pontiac, repairs for P0300 typically fall between $150 and $1200, depending on the root cause and labor rates in your area.
Known issues on Pontiac
Pontiac G6 3.5L and 3.9L V6 (LX9/LZ4) engines have a known Delphi ignition coil failure pattern—individual coil-on-plug units fail at 80k–100k miles, often causing P0300 before isolating to a specific cylinder P030X code. Replace all six coils and spark plugs as a set. On G8 6.0L LS2 V8, P0300 is uncommon and usually indicates a spark plug issue—use OEM AC Delco iridium plugs only; aftermarket plugs in the LS2 often cause misfire. Pontiac Vibe (Toyota drivetrain) should follow Toyota P0300 diagnosis.
Most commonly affected models