Make it safe
Shut off water and power, then verify both are actually off.
All guides
Greg’s field guide
Dishwashers
Connect supply and drainage correctly and prevent dirty-water surprises.
07
First, understand the job.
A dishwasher is three jobs: a safe water supply, a protected drain path, and power installed to local requirements.
Step by step
Do it in this order.
Find the actual problem
Inspect the supply line, stop valve, drain hose, and air gap or high loop.
Make the repair
Keep the drain hose routed high to prevent sink water flowing backward.
Test your work
Run a full cycle with the toe-kick removed and inspect with a flashlight.
One last check
Dry everything, run the fixture more than once, and look again in ten minutes. A tiny drip now becomes cabinet damage later.