Quick Answer
Before calling a technician, check these six things: the power connection, the door latch, the circuit breaker, the water supply valve, the filter for blockages, and any error codes — these account for most dishwashers that suddenly stop working.
A dishwasher won't run at all if the door isn't fully latched — this is one of the most common and easily missed causes.
A dishwasher that's stopped working completely doesn't always mean a major fault. Several common causes are simple to check and don't require any tools.
Work through these six checks in order before assuming you need a repair booking.
6 Checks Before Calling a Technician
- Confirm the dishwasher is receiving power and the outlet works
- Check the door is fully closed and the latch is engaging
- Check the household circuit breaker hasn't tripped
- Confirm the water supply valve behind the dishwasher is open
- Clean the filter at the base of the tub for blockages
- Note any error code shown on the display panel
Why the Door Latch Matters
Almost all dishwashers have a safety interlock that prevents the cycle from starting unless the door is fully closed and the latch engaged. If the dishwasher seems completely dead, this is one of the first things to check — and it's a free fix if the latch mechanism just needs realigning.
When the Fault Is More Serious
If you've worked through all six checks and the dishwasher still won't run, the fault is likely the control board, door latch mechanism itself, or an internal electrical component — all of which require a licensed technician to diagnose and repair.
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Frequently Asked Questions
Why has my dishwasher suddenly stopped working?▼
Check power, the door latch, the circuit breaker, the water supply valve, and the filter first — these cover the most common causes.
Will a dishwasher run if the door isn't fully closed?▼
No — a safety interlock prevents it from starting. Make sure the door is closing fully and the latch is engaging properly.
What does it mean if my dishwasher shows an error code?▼
Error codes indicate a specific fault detected internally. Note the code before calling a technician, as it speeds up diagnosis.
Is a blocked filter a common cause of a dishwasher not working?▼
A blocked filter more commonly causes poor cleaning or drainage issues rather than the dishwasher not starting at all, but it's worth checking regardless.
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Dishank Patel
Lead Technician & Founder · DP Electric Melbourne
Dishank Patel has over 10 years of hands-on experience repairing household appliances across Melbourne's eastern suburbs. He holds all required Victorian electrical and gas licensing and has personally repaired thousands of appliances across brands including Bosch, Miele, LG, Samsung, and Fisher & Paykel.