P0300 (Audi): Worn out spark plugs, ignition wires, coil(s), distributor cap and… — what it means, the affected system and what to check before replacing parts.
Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems). Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain