Garbage disposal leaks only when the dishwasher is draining.

Safety first: Turn off power to the disposal and unplug the dishwasher.

• Run a test drain: Place a towel and tray under the disposal. Run a dishwasher drain cycle and observe where water emerges.
• Tighten hose clamp: If water leaks at the inlet connection, tighten or replace the hose clamp and ensure the hose is fully seated.
• Inspect spigot and hose: Check for cracks in the plastic spigot and splits in the hose. Replace any damaged components.
• Check for downstream blockage: A blocked sink waste can cause backpressure and leaks at the weakest point. Clean the P-trap and horizontal waste pipe if necessary.