Dishwasher Isn't Working – What Part or Fix Will Solve It?
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Understanding the Problem
When a dishwasher 'isn't working' that can mean several different failures: it may not start, may not fill with water, may not drain, may run but not clean, or may leak. Each of those symptoms points to a different set of components (electrical, water supply, pumps, valves, or seals). Start by identifying the exact symptom and when it occurs (immediately, mid-cycle, or at the end). Many common dishwasher problems are straightforward to test without special tools — e.g., checking for power at the control panel, listening for the pump, confirming water supply, or inspecting the door latch. Replacing the correct part usually resolves the issue, but always isolate power and water before doing any service. If the problem is electronic (control board) or you find water inside electrical compartments, consider a professional repair for safety.
Common Symptoms
Dishwasher won't start; dishwasher runs but doesn't fill; dishwasher fills but won't wash/drain; dishes not clean; loud grinding or humming; dishwasher leaks or smells.
Common Causes
- No power or faulty control/selector (blown fuse, tripped breaker, failed control board, or bad touchpad)
- Mechanical failure (door latch, door switch, or broken motor/pump)
- Water system failure (faulty water inlet valve, clogged filter/spray arm, stuck float switch, or blocked drain pump)
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
First reproduce the symptom and note when it happens. Then check basic things: is the dishwasher getting power (circuit breaker/fuse)? Is the door latching properly? Is there visible water in the sump? Those three quick checks narrow down the likely part to inspect.
Frequently Asked Questions
My dishwasher won't start — what should I check first?
Check power: confirm the circuit breaker hasn't tripped and the appliance is getting power. Next, make sure the door is fully latched (dishwashers won't start with the door open). If power and latch are OK, try the reset cycle or consult error codes on the display; if there's still no response the electronic control or user interface may be faulty.
Dishwasher fills but won’t drain — what's likely wrong?
If the dishwasher fills but won’t drain, inspect the filter and sump for clogs, then listen for the drain pump when a drain cycle starts. A blocked or failed drain pump, a clogged garbage disposal connection (for models that connect to a disposal), or a clogged drain hose are common causes. Clear the obstruction or replace the drain pump/hose if damaged.
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Your Free Parts Videos
Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to PartsDiscount.com where you can search by model number and get the right part shipped fast.