p0300
Moderate
Honda · SUVs
Random/Multiple Cylinder Misfire Detected
Quick Answer
Error code P0300 on your Honda SUVs means: Random/Multiple Cylinder Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
RW1RW3RW5RV1CR-V EX 2024CR-V EX-L 2024CR-V Hybrid Sport 2024CR-V Hybrid Sport Touring 2024CR-V Hybrid Sport-L 2024CR-V LX 2024CR-V Sport 2024CR-V Sport Touring 2024HR-V EX-L 2024HR-V LX 2024HR-V Sport 2024Passport EX-L 2024Passport Sport 2024Passport Touring 2024Passport TrailSport 2024Pilot EX 2024Pilot EX-L 2024Pilot Elite 2024Pilot LX 2024Pilot Touring 2024Pilot TrailSport 2024YG7YA7ZD1RZ1
Likely Causes
How to Fix It
1
Remove and inspect all spark plugs for wear, carbon fouling, or incorrect gap; replace as a complete set
2
Test ignition coils using a multimeter for primary and secondary resistance; swap between cylinders to isolate
3
Measure fuel pressure at the rail and compare to specification; check fuel pump volume output
4
Perform a smoke test for vacuum leaks throughout the intake system
5
Run a compression test on all cylinders to check for internal engine wear
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Spark plugs (NGK or Denso OEM-spec)
Ignition coil packs
Fuel pump assembly
Intake manifold gasket
Valve cover gasket
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