LG Dishwasher Error Codes Explained: What Each Code Actually Means (And What We Find)

by Marsh | May 3, 2026 | Dishwasher Repair

Your LG dishwasher just stopped mid-cycle and displayed an error code. Now what?

Here's what 15+ years of LG dishwasher repairs across Australia has taught us: error codes are your appliance's way of being specific about problems. Understanding what the code means is half the battle to fixing it.

We can often diagnose your exact problem over the phone just by knowing the error code and a few details about when it appeared. This guide walks through the most common LG dishwasher errors and what we actually find when we diagnose them.

The Most Common LG Dishwasher Error Codes (At a Glance)

IE Error: Water Inlet Fault

What it means: The machine attempted to fill with water but either the water didn't arrive or the inlet system detected a problem.

What we find when we diagnose it:

The inlet valve is stuck open or closed. LG inlet valves are electronically controlled. They can stick due to mineral buildup (especially in hard-water regions like Adelaide) or electrical failure.

Your water supply is actually shut off or restricted. Sounds obvious, but we get calls where the water valve behind the dishwasher has been accidentally turned off. Check this first.

The inlet hose is kinked, crushed, or blocked. We regularly find inlet hoses compressed against the wall or twisted during installation.

The water pressure is too low. This is rare in Australian homes, but if you have very low water pressure, the machine might not fill fast enough and triggers the IE code.

How to troubleshoot IE yourself:

• Check your water supply. Look behind the dishwasher at the shut-off valve (usually a small knob or lever). Ensure it's fully open (horizontal position).
• Check the inlet hose. Follow it from the water connection to where it enters the dishwasher. Look for kinks or crushing. Straighten if needed.
• Run the water at your sink. Ensure normal water pressure. If it's weak, the problem might be upstream (not the dishwasher).
• Look inside the dishwasher. Is water accumulating slowly instead of not at all? This suggests a slow fill rather than a complete failure. Run a short cycle and see if the error recurs.

If cleaning and straightening don't work, the inlet valve likely needs replacement. This is a professional repair.

IE Error Diagnosis Table:

In hard-water regions: Adelaide and parts of Brisbane see more IE errors due to mineral deposits blocking the inlet valve. We recommend:

• Running a descaling cycle monthly
• Having the inlet valve professionally cleaned or replaced every 5-7 years as preventative maintenance

OE Error: Drainage Fault

What it means: Water that should have drained is still present in the tub. The machine's drainage system isn't working.

What we find when we diagnose it:

(This is our most common LG error, accounting for roughly 40% of all LG service calls.)

The pump filter is clogged. Food debris, lint, hair, or mineral deposits are blocking water flow into the pump. We find filters so blocked that water can barely move through them.

The drain hose is kinked or blocked. The hose behind your dishwasher can be twisted, crushed, or internally blocked by food or mineral deposits.

Your garbage disposal is clogged. If the dishwasher drains through the disposal, a full or blocked disposal prevents drainage.

The knockout plug in the garbage disposal wasn't removed. This small rubber disc blocks the port completely. We've had to drive across Sydney to remove a knockout plug that cost a customer stress and worry.

Your home's drain system is backed up. Sometimes it's not the dishwasher at all -- your sink is clogged or your home's plumbing has a backup.

How to troubleshoot OE yourself:

• Stop immediately. Unplug the machine and drain the water manually using the emergency drain hose (bottom-left of the machine, usually).
• Clean the filter. Access the service panel, locate the cylindrical filter at the bottom of the tub, turn it counterclockwise, and pull it out. Rinse thoroughly under warm water. This alone fixes 60% of OE errors.
• Check the drain hose. Trace it from the machine to where it enters your plumbing. Straighten any kinks you find.
• Check the garbage disposal. If your dishwasher drains through it, run the disposal for 10 seconds to ensure it's clear. Look inside the disposal drain opening and check for a knockout plug (small rubber disc). Remove it if present.
• Run a spin-only cycle. If water drains, the error is solved. If it persists, the problem is either internal (pump failure) or upstream (your home's plumbing).

If these steps don't work, the pump might be failing or your home's drain is backed up. Call a professional or plumber.

OE Error Diagnosis Table:

Australian regional note: Coastal areas see more OE errors due to increased humidity accelerating lint and debris accumulation. Clean your filter monthly if you live near the coast.

FE/AE Error: Overflow or Leak Detection

What it means: The machine's leak sensor detected water where it shouldn't be. Either there's an actual leak, or the sensor has malfunctioned.

What we find when we diagnose it:

An actual leak in the door seal. The rubber gasket is degraded, cracked, or warped, allowing water to escape. More common in humid climates (Sydney, Perth, Brisbane).

The machine isn't level. If it tilts forward or is perfectly level instead of slightly back, water pools where the sensor sits even without a leak.

A malfunctioning sensor. The float switch is corroded, damaged, or electrically faulty. It triggers even though there's no actual leak.

A loose inlet connection. Water is spraying where it shouldn't, reaching the sensor.

Your home's humidity is creating condensation that reaches the sensor. In tropical climates (Brisbane especially), high humidity can cause false triggers.

How to troubleshoot FE/AE yourself:

• Look for actual water. Open the service panel and inspect the area under the tub. Is it wet or dry? If dry, there's likely no leak.
• Check the door seal. Open the door and inspect the rubber gasket all around. Look for cracks, warping, or compressed areas. Clean it with warm soapy water.
• Verify the machine is level. Use a spirit level on top of the dishwasher. It should be very slightly tilted back (maybe 2-3 degrees). If it's level or tilted forward, adjust the front feet by turning the bolts underneath.
• Run a short test cycle. If the error doesn't recur, you've likely fixed it. If it reappears, the sensor probably needs replacement.

If water is visible or the error persists, professional service is needed.

FE/AE Error Diagnosis Table:

Australian climate note: In coastal humid areas, seal degradation accelerates. Replace door seals every 8-10 years rather than waiting for failure.

tE Error: Temperature Sensor Fault

What it means: The machine's temperature sensor (which monitors water temperature during wash cycles) has malfunctioned or detected an impossible reading.

What we find when we diagnose it:

The sensor itself has failed. Electronic sensors can degrade over time, especially in high-humidity environments.

The sensor's electrical connection is loose or corroded. This is more common in coastal homes (Sydney, Perth) where salt air accelerates corrosion.

A genuine electrical fault in the control board's sensor circuit.

Can you fix tE yourself?

Rarely. The temperature sensor is an electronic component. If it fails, it needs replacement. This requires:

• Locating the sensor (varies by model)
• Disconnecting the electrical connector carefully
• Installing the new sensor
• Testing to ensure it works

This is professional territory. DIY attempts can damage the control board.

tE Error Diagnosis Table:

What we do: We replace the sensor with a genuine LG part, test it with multiple cycles to ensure it's reading correctly, and provide a 12-month parts warranty.

Cost: Sensor replacement typically runs $150-250 for the part plus labor.

bE Error: Motor or Pump Drive Error

What it means: The machine's motor or pump has encountered an electrical fault or mechanical failure. The control board has detected something wrong with the drive system.

What we find when we diagnose it:

The pump motor has failed. After years of continuous operation, the motor brushes wear, windings burn, or the motor simply stops responding to electrical signals.

The pump impeller is stuck or damaged. The spinning component inside the pump is seized or broken.

An electrical connection to the motor is loose or corroded.

A genuine control board failure affecting how it signals the motor.

Can you fix bE yourself?

No. This is a mechanical and electrical problem requiring professional diagnosis. You could damage the motor or control board attempting DIY repairs.

bE Error Diagnosis Table:

What we do: We test the motor's electrical continuity, listen to whether it attempts to engage, and determine if it's a motor replacement or control board issue. Most bE errors require motor replacement.

Cost: Motor replacement typically runs $300-500 depending on your model.

Error Code Patterns We See Across Australia

In coastal regions (Sydney, Perth):

• More FE/AE errors due to humidity and seal degradation
• More corrosion-related electrical errors (tE, bE)
• Acceleration of drain problems due to increased lint/debris in humid conditions

In hard-water regions (Adelaide, parts of Brisbane):

• More IE errors (mineral buildup in inlet valve)
• More OE errors (mineral deposits in filter and drain system)
• We recommend monthly descaling cycles in these areas

In tropical climates (Brisbane, Cairns):

• More false FE/AE triggers due to condensation
• Faster seal degradation
• Increased electrical component corrosion

In older Australian homes:

• More OE errors due to aging home plumbing having backup issues
• More installation-related issues if the machine was installed decades ago and never repositioned

Avoiding Most LG Error Codes

These habits keep LG dishwashers running error-free:

• Scrape dishes thoroughly before loading -- Less debris reaching the filter
• Clean the pump filter monthly if you run multiple loads per week
• Use rinse aid -- Helps water flow cleanly, reducing sediment
• In hard-water regions, run a descaling cycle monthly
• Verify the machine is level annually -- Check that it hasn't shifted
• Clean the door seal quarterly with warm soapy water
• Don't overload excessively -- Affects water circulation
• Keep the drain hose routed correctly -- No kinks, no compression

Frequently Asked Questions

Can I fix any LG error code myself, or do some always require a professional?

IE, OE, and FE/AE errors are often DIY-fixable (cleaning, straightening hoses, leveling). tE and bE errors (sensor and motor) almost always need professional service.

Is it worth calling a technician if I'm not sure which error code my dishwasher is showing?

Yes. Tell us the code and we can often diagnose over the phone. Sometimes the code display is unclear. We can help clarify and tell you if it's DIY-fixable.

How long do parts typically last before needing replacement in an LG dishwasher?

Filters and door seals: 8-10 years in humid climates, 12-15 years inland. Pumps: 10-15 years depending on use. Inlet valves: 12+ years unless affected by mineral deposits.

Are error codes more common in older LG models?

Older models (10+ years) show more errors as sensors become less accurate and seals degrade. But LG's error codes are reliable across all ages. If an error appears, it indicates a real problem.

Should I reset my LG dishwasher if an error code appears?

You can try unplugging for 5 minutes, then plugging back in. This clears some false error triggers. But don't keep resetting if the error returns -- that indicates a persistent problem needing diagnosis.

Your Next Step

If you've identified your error code and troubleshooting hasn't worked, call National Appliance Repairs for professional LG dishwasher service.

Call 1300 434 380 to book service in your area (Melbourne, Sydney, Brisbane, Perth, Adelaide). Our office team is available Monday-Friday 8:30 AM–7:00 PM, Saturday 8:30 AM–4:30 PM.

Tell us your error code and we can often diagnose the problem over the phone. Many codes require simple fixes. Those that need parts replacement come with our 12-month parts warranty. We service all LG models and know these machines inside and out.

Miele Dishwasher F11 Error: Why It Happens And When To Call A Professional

by Marsh | May 1, 2026 | Dishwasher Repair

An F11 error on your Miele dishwasher is a drainage fault code, and if you own a Miele, you probably know that this appliance cost you serious money. You didn't buy it to sit idle.

Here's what we've learned from servicing Miele dishwashers across Australia for 15+ years: an F11 error is more likely to be a legitimate repair issue than some of the simpler error codes on other brands. Miele builds precision machines, and when they report a problem, it's usually genuine.

This doesn't mean you need to panic. But it does mean the diagnostic process is more technical, and you need to know when professional service is actually required.

What the F11 Code Specifically Means (In Miele's Language)

Miele's error codes are specific. F11 translates to "Drainage Fault" with a particular implication: the machine has attempted drainage multiple times and detected that water is present when it shouldn't be.

Unlike some other brands that throw drainage codes at every minor issue, Miele's pressure sensor is calibrated to be more selective. If a Miele is reporting F11, it's not being overly sensitive.

After servicing hundreds of Miele dishwashers across Melbourne, Sydney, Brisbane, Perth, and Adelaide, we found that the filter in your Miele's drain system is blocked or the non-return valve is stuck.

These are precision components, and Miele's engineering expects them to work perfectly. When they don't, the machine stops rather than forcing water through and causing internal damage.

The drain hose is kinked or blocked, preventing water from flowing into your home's drainage system at the rate the machine expects.

Your home's plumbing has a backup, and water is pooling where the dishwasher tries to drain into it.

The pressure sensor itself has malfunctioned, incorrectly signalling that water is present.

The Diagnostic Process: What We Do Before Recommending Parts

Here's where Miele owners need to understand something: we don't just swap components. We diagnose.

A Miele costs between $2,000-$5,000+ new. You didn't buy it for quick fixes. You bought it because it's engineered to last 20 years. Our approach respects that investment.

When we get an F11 call, we follow this process:

First, we check if this is an actual Miele problem or a plumbing problem. We ask specific questions: Where is the dishwasher draining? Is your sink draining properly? Have you noticed slow drainage elsewhere in your home?

If the sink is slow, it's your home's plumbing. We refer you to a plumber. Miele can't fix a backed-up drain line.

Second, we confirm the error is reproducible. We ask if the F11 appears every cycle or occasionally. A consistent error suggests a component issue. An intermittent error might be a sensor glitch.

Third, we identify which generation/model of Miele you have, because the internal components vary. A G1xxx series has different internal architecture than a G6xxx or G7xxx. The non-return valve location, filter type, and drain configuration differ.

What We Actually Find When We Service F11 Errors

The filter blockage. Most Miele dishwashers have a fine mesh filter at the base of the drain system. It's designed to catch food particles and prevent them from reaching the pump or non-return valve.

Over time, especially if you pre-rinse poorly (or don't pre-rinse at all), this filter accumulates debris. We regularly find filters so blocked that water can barely trickle through.

What surprises Miele owners: the filter can look relatively clean from above but be completely clogged from the underside where food particles have compressed against the mesh.

We clean it by running water upward through the mesh (opposite to normal flow direction) which dislodges the packed-in debris.

The non-return valve stuck closed. This is the Miele-specific component. Most dishwashers have a simple one-way flap or ball valve. Miele's non-return valve is more sophisticated -- and more prone to sticking if mineral deposits or food particles jam it.

When this valve sticks, water backs up into the tub even though the pump is working correctly. The pressure sensor detects this backup, and F11 appears.

We inspect it by removing the drain hose assembly and checking the valve's movement. A stuck valve needs to be cleaned or replaced.

Mineral deposits in the drain system. If you live in Adelaide or other hard-water regions of Australia, mineral buildup is a real problem. We've opened Miele drain systems where calcium deposits have restricted the drain path to a fraction of its normal diameter.

This doesn't happen overnight. It takes years of hard water running through the system. But once it starts, it accelerates.

A damaged pressure sensor. On newer Miele models, the pressure sensor is electronic. It can malfunction. But here's the thing: Miele's diagnostics are so good that a faulty sensor usually generates a different error code (often F13 or F14). F11 specifically points to an actual drainage issue more often than it points to the sensor.

F11 Error Diagnosis Table

The Honest Assessment: Can You Fix This Yourself?

For a Miele, the answer is usually "no" without risking something more expensive.

The filter? You might be able to access and clean it if you're mechanically inclined and have the manual. The service manual exists online for most Miele models.

The non-return valve? This is where it gets risky. The valve is a precision component. If you disturb it incorrectly, you could damage the seal or the spring mechanism. That's a $200+ replacement rather than a $50 professional cleaning.

We tell every Miele owner that if the F11 error started suddenly (you were running it fine yesterday), it's likely the filter. Try this: Access your manual and locate the filter. Run warm water through it from underneath (opposite direction). If water suddenly flows easily and the error disappears, you found it.

If the F11 error started gradually (cycles were taking longer and longer), it's likely mineral buildup or a stuck valve. This needs professional attention.

If you live in a hard-water region (Adelaide, some parts of Brisbane, Perth), and you haven't had the drain system serviced in 5+ years, it's time. Preventative maintenance costs $150-$200. Ignoring it until the valve is completely blocked costs $500+.

What Actually Fixes F11 (When We Diagnose It)

• Filter cleaning: We access the filter, inspect it, and run water through it from both directions to dislodge debris. Takes 30 minutes. Most common fix for F11.
• Non-return valve cleaning: We remove the drain hose assembly, inspect the valve, and if it's stuck, we carefully clean it or -- if it's damaged -- replace it. Takes 1-2 hours depending on valve type.
• Non-return valve replacement: If the valve is damaged or the seal is compromised, we replace it with a genuine Miele component. Not cheap ($250-$350 for the part), but it restores your dishwasher to factory specifications.
• Drain hose inspection and repositioning: We check the entire drain path, ensure the hose isn't kinked, and confirm it connects to your home's plumbing correctly. Sometimes this alone fixes it.
• Pressure sensor replacement: If diagnostics confirm the sensor is faulty (rare for F11, but possible), we replace it with a genuine component.

All repairs come with a 12-month parts warranty.

Regional Considerations for Australian Miele Owners

• Hard water regions (Adelaide, parts of Brisbane, Perth): If you haven't had your Miele serviced in 5+ years, schedule preventative maintenance now. Mineral buildup in the drain system is inevitable in hard water.
• Coastal areas (Sydney, Perth): Salt air doesn't typically affect internal drain components, but high humidity can accelerate corrosion on the metal valve housing. Make sure your drain hose isn't exposed to constant moisture.
• Older Australian homes with aging plumbing: We've serviced Miele dishwashers in 1960s homes where the plumbing is the actual problem, not the appliance. The dishwasher is trying to drain into a system that's backed up or has a blockage elsewhere.
• High-use households (large families): If you're running the dishwasher 2+ times daily, the filter needs cleaning more frequently. We recommend monthly filter checks for heavy users.

Keeping Your Miele Draining Perfectly

Miele owners are thoughtful about maintenance. These practices keep F11 from appearing:

• Pre-rinse or scrape thoroughly -- This is the #1 prevention. Most food particles should be removed before loading. Less debris reaching the filter means fewer blockages.
• Clean the filter quarterly -- Access it, inspect it, run water through it. Takes 10 minutes. Prevents buildup.
• Run the machine with a full load -- Partial loads create uneven water distribution and can increase sediment reaching the filter.
• Use rinse aid -- Miele recommends this for a reason. It helps water flow off dishes cleanly, reducing sediment.
• In hard-water regions, run a descaling cycle every 3 months -- Your manual specifies the descaling process. This prevents mineral buildup in the drain system.
• Don't force the drain hose -- If your plumbing connection is tight, take time to position the hose properly. Don't kink it or compress it.
• Have the drain system serviced every 5 years -- Even in soft-water regions. This is preventative maintenance that costs $150-$200 now or $500+ when something fails.

Frequently Asked Questions

Is the F11 error always a major repair?

No. About 50% of the time it's just a clogged filter that needs cleaning. Some F11 errors are simple drain positioning issues. However, Miele's precision means it's more likely to need professional attention than other brands.

What's a non-return valve and how much does it cost to replace?

It's a one-way valve that prevents water from flowing backward into your dishwasher. If it's stuck, water backs up and triggers F11. Replacement typically costs $200-300 for the part plus labor.

Is preventative maintenance really necessary for a Miele?

In hard-water regions, yes. Adelaide and hard-water areas should have the drain system professionally serviced every 5 years ($150-200). This prevents the mineral buildup that causes F11 errors later.

Can I pre-rinse dishes in a Miele?

Miele doesn't require pre-rinsing, but light scraping helps. Heavy food particles should be removed. This reduces debris reaching the filter and prevents many drainage issues.

How long should a Miele last before needing major repairs?

With proper maintenance, a Miele typically lasts 15-20 years. If you're getting repair calls before 10 years, something is genuinely wrong worth fixing. After 15 years, evaluate whether ongoing repairs make sense.

The Miele Difference

You own a Miele because it's built to last. It's precise. It's German engineering. And it deserves professional service from technicians who understand that level of quality.

An F11 error isn't a minor inconvenience on a Miele -- it's the machine telling you something specific is wrong. We take that seriously. We diagnose carefully, we use genuine parts, and we get your Miele back to the standard you expected when you bought it.

Call National Appliance Repairs for Miele dishwasher service.

Call 1300 434 380 to book service in your area (Melbourne, Sydney, Brisbane, Perth, Adelaide). Our office team is available Monday-Friday 8:30 AM–7:00 PM, Saturday 8:30 AM–4:30 PM.

We service all Miele models from all generations. We carry genuine parts, and every repair includes a 12-month parts warranty. Your Miele is worth it.