Dishwasher Error: Troubleshooting Guide (Troubleshooting Guide)

On this page

Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

Turn off power to the dishwasher, check for error codes on the display, and consult the user manual. If the error persists, inspect the water inlet valve, drain pump, and check for clogs in the filter or spray arms.

Confirm the symptom

Error code displayed on the control panel
Dishwasher won't start or stops mid-cycle
Unusual noises during operation
Water pooling at the bottom of the dishwasher

Tools and prep

Screwdriver set
Multimeter
Plumber's putty or silicone sealant
Clean cloth or sponge
Owner's manual
Safety gloves
Turn off power at the circuit breaker or unplug the unit
Shut off water supply if working on inlet valve or drain pump

Step-by-step troubleshooting

Identify the Error Code
Do: Check the control panel for any displayed error codes or symbols.
Observe: Note the specific code or message shown.
Means: The code indicates the specific issue (e.g., F-1 for water temperature, F-7 for drain problems).
Next: Consult the user manual for the code's meaning.
Reset the Dishwasher
Do: Unplug the dishwasher for 1–2 minutes or turn off the circuit breaker for 30 seconds.
Observe: The display should clear and reset to normal mode.
Means: A temporary glitch may have caused the error.
Next: Run a test cycle to see if the error returns.
Check Water Supply
Do: Ensure the water inlet valve is fully open and the water supply is active.
Observe: Water should flow freely from the inlet valve.
Means: Low water pressure or a closed valve can trigger errors.
Next: If no water flows, test the inlet valve with a multimeter.
Inspect the Drain System
Do: Remove and clean the drain filter and spray arms. Check the drain hose for kinks or clogs.
Observe: Water should drain completely with no obstructions.
Means: Clogs prevent proper drainage and cause error codes.
Next: Run a cycle to test if the drain issue is resolved.
Test the Water Temperature
Do: Place a thermometer in the bottom rack and run a cycle. Check the temperature after the fill phase.
Observe: Water should reach at least 120°F (49°C).
Means: Cold water can cause cleaning and sanitization errors.
Next: Adjust the water heater temperature if it's too low.
Examine the Dishwasher Door
Do: Check the door latch and seal for damage or debris. Ensure the door closes fully and securely.
Observe: The door should close without gaps and the latch should engage properly.
Means: A faulty door latch or seal can prevent the dishwasher from starting.
Next: Clean or replace the door seal if damaged.

Common causes

Cause	Likelihood	Difficulty	Part often needed
Clogged Drain Filter Food particles and debris block water flow, causing drainage errors.	Common	Easy	Drain filter (often removable and reusable)
Faulty Water Inlet Valve The valve fails to open, preventing water from entering the dishwasher.	Sometimes	Medium	Water inlet valve
Malfunctioning Drain Pump The pump fails to remove water, leading to pooling and error codes.	Sometimes	Hard	Drain pump assembly
Low Water Pressure Insufficient pressure prevents proper filling and cleaning.	Sometimes	Easy	None (check and adjust water supply)
Faulty Door Latch or Seal A damaged latch or seal prevents the dishwasher from starting or sensing the door is closed.	Sometimes	Easy–Medium	Door latch assembly or door seal
Blocked Spray Arms Clogged spray arms restrict water flow, leading to poor cleaning and error messages.	Common	Easy	Spray arm (often removable and cleanable)
Incorrect Water Temperature Water below 120°F (49°C) can cause cleaning and sanitization issues.	Sometimes	Easy	None (adjust water heater settings)
Control Board Error A malfunction in the control board can cause random error codes.	Rare	Hard	Control board

Parts matching

If you need to replace a part, match your symptoms to the most likely components:

Clogged filter or spray arms: Clean or replace filter/spray arms
Water not entering: Replace water inlet valve
Water not draining: Replace drain pump
Door won't close: Replace door latch or seal
Unusual noises: Check for loose parts or worn bearings

Always refer to the user manual for part numbers and compatibility with your model.

When to call a professional

Error codes persist after trying all troubleshooting steps
You hear a burning smell or notice electrical sparks
The dishwasher leaks water excessively
You suspect a damaged control board or wiring
You're unsure about handling electrical components or plumbing
The appliance is under warranty and you don't want to risk voiding it

FAQ

What does an F-1 error code mean?

An F-1 code usually indicates a water temperature issue. Check that the water heater is set to at least 120°F (49°C).

How do I reset my dishwasher after an error?

Unplug the unit for 1–2 minutes or turn off the circuit breaker for 30 seconds. This can clear temporary glitches.

Can I use vinegar or bleach to clean the dishwasher?

Yes, a vinegar solution can clean filters and spray arms. Avoid using bleach unless specified in the manual, as it can damage components.

Why is there water pooling at the bottom?

This is often due to a clogged drain filter or a faulty drain pump. Clean the filter and inspect the pump for blockages.

What if the error code keeps returning?

If the error persists after troubleshooting, there may be a deeper issue with the control board or wiring. Contact a professional technician.