P0300
Fix soonEngine & fuel systemRandom/multiple cylinder misfire
The engine is misfiring across cylinders. Distinct from P030x codes (which point to a specific cylinder).
Common causes
- Old spark plugs / coils across the engine
- Vacuum leak
- Low fuel pressure
- Carbon-fouled valves (DI engines)
First thing to try:
If it's been 80k+ km on the original plugs/coils, replace them all.
Can I keep driving?
Short trips only. Book a diagnosis soon — driving on this fault can damage other parts.
Who fixes P0300
This one falls under Fault code diagnosis. Verified specialists can read it live over a remote session, usually in a few minutes — you only pay if it works.
Full guide
P0300 meaning: Random/Multiple Cylinder Misfire Detected ExplainedUnderstand P0300 meaning, common causes, live scan PIDs, DIY checks, and when to consult a specialist for accurate diagnosis.Related codes
These explanations are from a curated DTC knowledge base. Manufacturer-specific codes may need a specialist's hands-on read.