P0305 means cylinder 5 misfire detected. Cylinder 5 isn't firing properly (V6/V8 engines). Same diagnostic path as other single-cylinder misfires: plug, coil, in
Drive gently and get it diagnosed within days.
Cylinder 5 isn't firing properly (V6/V8 engines). Same diagnostic path as other single-cylinder misfires: plug, coil, injector.
Most likely.
Common on higher-mileage engines.
Cylinder 5 fuel delivery.
Rings/valves.
Lean misfire.
Typically $100–$500
Single plug/coil typically $100–$300; injector work typically $150–$400. Estimates vary by vehicle. Costs are estimates and vary by vehicle, location, and shop.
Short trips okay; fix soon to protect the catalytic converter.
Typically $100–$500. Single plug/coil typically $100–$300; injector work typically $150–$400. Estimates vary by vehicle.
Drive gently and get it diagnosed within days.
The most common cause is worn spark plug in cylinder 5. Most likely.