P0300 on Audi: Random / Multiple Cylinder Misfire Detected
Diagnostic trouble code P0300 on Audi vehicles — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does P0300 mean?
P0300 indicates: Random / Multiple Cylinder Misfire Detected.
This relates to the Ignition / fuel / Combustion - multiple cylinders system.
Common causes of P0300
Ignition coils/plugs
Vacuum/intake leak
Fuel delivery
Carbon buildup (DI engines)
What to check (live data)
Misfire counters per cylinder
Fuel trims (%)
Fuel rail pressure (bar)
Parts often involved in P0300
ignition coil
spark plug
Don't replace parts until the root cause is confirmed — many of these codes are caused by wiring, a connector or an upstream fault, not the part itself.
Get the confirmed root cause for P0300 — on YOUR vehicle
A code is a symptom, not a diagnosis. AutoDX Pro cross-checks several
independent assessments, pinpoints the actual root cause, gives you the
exact tests to confirm it, and shows the parts — only after the cause is
confirmed. Reads your scan-tool photo and decodes your VIN with open
recalls.
P0300 is a diagnostic trouble code: Random / Multiple Cylinder Misfire Detected.
What are the common causes of P0300 on an Audi?
Common causes include: Ignition coils/plugs, Vacuum/intake leak, Fuel delivery, Carbon buildup (DI engines). The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving an Audi with P0300?
It depends on the fault and your symptoms. Some causes are minor, others can damage components or affect safety. Get the root cause confirmed before deciding.
How do I fix P0300 on an Audi?
Confirm the actual root cause with targeted tests first, then replace only the part that's at fault. AutoDX Pro gives you the root cause, the exact tests, and the parts for P0300 on your specific Audi.