Statewide Appliance Spares Blog
Warning signs your dishwasher is failing (and what to do)
Let's be honest—your dishwasher is probably one of the hardest working appliances in your home. A few water spots or the occasional weird noise? Sure, that's annoying but not exactly panic-worthy. But some warning signs deserve your immediate attention. We're talking potential water damage, safety issues, or a complete breakdown that leaves you hand-washing dishes for weeks. Here are the warning signs that mean your dishwasher is failing, and what you can do about it.
Looking for a specific part? Browse our full range of dishwasher spare parts.
Safety first!
Before you start any repair work:
- Turn off power at the circuit breaker
- Turn off the water supply
- Place towels down to catch leaks
- Have a bucket ready for residual water
- Take photos before disconnecting anything
1. Burning smell or hot exterior
Warning sign: There's a burning smell when you run a load, or the outside of your dishwasher is unusually hot.
Why it matters: This usually means something’s wrong with the electrical system or the motor is overheating, which is a potential fire hazard.
What to do: Turn off the dishwasher at the circuit breaker immediately. Don't use it until a professional has inspected your appliance.
Don’t ignore it: Potential fire hazards should always be investigated. Call in the experts.
2. Water under or around unit
Warning sign: You keep finding puddles on the floor near your dishwasher, or notice damp cabinets close by.
Why it matters: Leaks can quietly destroy your floors and cabinets—and repairs can be expensive.
What to do: Check the door seal for cracks or damage and inspect drain hoses for leaks. If the seal is worn, replace it immediately. If hoses are damaged or connections are loose, tighten or replace them.
Parts you might need: dishwasher seals, dishwasher hoses
DIY or call a pro? Seals and hoses are pretty straightforward to replace yourself. But if you can't work out where the leak's coming from, it's time to call a professional to have a look.
Check out our guide: How to easily replace your dishwasher door seal
3. Circuit breaker trips repeatedly
Warning sign: Your dishwasher keeps tripping the circuit breaker, usually at the start of a cycle.
Why it matters: This usually means there’s a short circuit or faulty wiring.
What to do: Stop using the dishwasher immediately and get an electrician to diagnose the problem.
Don’t ignore it: Repeated electrical faults can damage your home's electrical system and create fire risks.
4. Door won't latch or seal properly
Warning sign: The door won't close properly, pops open mid-cycle, or you can see daylight around the edges when it's "closed."
Why it matters: Without a proper seal, water will leak during cycles, and the dishwasher won't heat properly or clean effectively. The door latch mechanism may also be at risk of complete failure.
What to do: Check if the latch or seal looks damaged. If it does, stop using the machine until it’s fixed.
Parts you might need: dishwasher seals, dishwasher latches
DIY or call a pro? This is usually an easy DIY fix.
5. Visible rust, corrosion or brown water
Warning sign: Rust spots inside the tub, brownish water after a cycle, or your racks are looking pretty corroded.
Why it matters: Rust means the inside of your dishwasher is starting to break down. It can make your dishes dirty and usually means the machine is on its last legs.
What to do: If rust is extensive or you see rusty water, it's time to consider replacement. For minor rust on racks or baskets, replace them.
Parts you might need: dishwasher baskets and racks
When to replace: If the tub itself is rusting, you're better off buying new than repairing.
6. Strange noises - grinding, screeching or buzzing
Warning sign: You hear new, loud grinding, screeching, or buzzing noises.
Why it matters: These sounds usually mean something inside—like the bearings, motor or pump—is wearing out.
What to do: Stop the cycle and check if anything is blocking the spray arms. If the noise continues after clearing debris, the motor or pump may be failing.
Parts you might need: dishwasher spray arms, dishwasher motor, dishwasher pump
DIY or call a pro? Spray arms can easily be replaced. Motors and pumps need either an experienced DIYer or a service tech.
7. Dishwasher not drying properly (dishes hot but soaking wet)
Warning sign: When the cycle ends, your dishes are piping hot—but still soaking wet.
Why it matters: This usually means the heating element or thermostat isn’t working right—so your dishwasher can’t dry the dishes. Over time, the problem will continue to get worse.
What to do: Make sure you’re using rinse aid and that it’s topped up. Still wet? It might be time to replace the heating element.
Parts you might need: dishwasher heating element
DIY or call a pro? Confident DIYers can do this, otherwise call a service tech.
8. Energy bill has jumped
Warning sign: Your electricity or water bills have jumped for no obvious reason.
Why it matters: Worn parts make your dishwasher work harder and run longer, costing you more.
What to do: Clean or replace the filter, and check the spray arms and heating element for buildup.
Parts you might need: dishwasher filter, dishwasher spray arms, dishwasher heating element
Cost reality: Even a small fix—like a $50 part—can save you on monthly energy bills and pay for itself quickly.
Not sure how to clean your dishwasher filter? Read our guide on how to clean and maintain your dishwasher for better performance.
DIY vs professional
DIY repairs you can tackle:
- Door seal replacement
- Drain hose repairs
- Filter cleaning and replacement
- Spray arm cleaning and replacement
- Rack replacement
Call in the experts:
- Anything electrical (burning smells, tripping breakers, sparking)
- Motor or pump replacement
- Water inlet valve replacement
- Control board problems
- Mystery leaks you can't locate
Should you repair or replace?
Time to replace when:
- Your dishwasher is 10+ years old AND repairs cost more than half the price of a new one
- The tub is seriously rusted
- Multiple major parts are failing at once
- You've had several repairs recently
Repair makes sense when:
- It's less than 7 years old
- Only one part needs replacing
- It's a quality brand
- The repair is under $300–$400
Related guides
- Tackling hard water problems with dishwasher softener salt
- How to effectively descale your dishwasher
- Why is my dishwasher not drying properly
- How to clean your dishwasher and eliminate bad smells
- How to easily replace your dishwasher door seal
Check out our YouTube channel
Need help with your home appliance repairs and maintenance? Check out our DIY videos on our YouTube channel. All the expert hints and tips to make appliance repairs a breeze!
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Not sure what part you need? Our expert team is here to help. Call us on Free call 1800 005 220 or chat to us online.
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- Guide to common oven symbols, settings and functions
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- Tackling hard water problems with dishwasher softener salt
- New Year Appliance Check: 7 fixes to try before replacing your appliances
- More than just spares!
- 40 Years Strong! Celebrating Great Partnerships | Panasonic
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- 40 Years Strong! Celebrating Great Partnerhips | Speed Queen
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