Cylinder 3 Misfire Detected
The P0303 code indicates a misfire in cylinder 3. On Audi engines, this is commonly caused by a failing ignition coil, worn spark plug, or a faulty fuel injector specific to that cylinder.
DIY: $50 – $200
Independent Shop: $200 – $600
Dealership: $400 – $1000
Driving is not recommended as misfires can damage the catalytic converter.
Ignition coil failure, worn spark plugs, or injector issues.
Typically $150–$800 depending on the repair.