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)
| Error Code | What It Means | Most Common Cause | DIY Fixable? | Typical Fix |
|---|---|---|---|---|
| IE | Water inlet error | Inlet valve stuck or water supply blocked | Sometimes | Check water supply, clean inlet valve |
| OE | Water drainage error | Clogged filter or kinked drain hose | Usually | Clean filter, straighten hose |
| FE/AE | Water overflow/leak detection | Float sensor triggered or actual leak | Sometimes | Check door seal, verify sensor |
| tE | Temperature sensor error | Temperature sensor malfunction | Rarely | Usually requires part replacement |
| bE | Motor/pump error | Motor failure or electrical issue | No | Requires professional service |
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:
| What You Check | What We Usually Find | DIY Fix | Professional Fix | Cost |
|---|---|---|---|---|
| Water shut-off valve | Accidentally turned off | Turn valve horizontal | N/A | Free |
| Inlet hose | Kinked or crushed | Straighten hose | Replace if damaged | $50–100 |
| Water pressure | Low pressure at home | Contact water utility | Plumber needed | Varies |
| Inlet valve | Mineral deposits or failure | Descaling cycle | Valve replacement | $150–250 |
| Fill speed | Slow but filling | Run full cycle | Check water line | $100–150 |
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:
| What You Check | What We Usually Find | DIY Fix | Professional Fix | Cost |
|---|---|---|---|---|
| Pump filter | Clogged with food/debris | Clean filter thoroughly | Replace if damaged | $80–150 |
| Drain hose | Kinked, twisted, or blocked | Straighten or clear hose | Replace if cracked | $100–150 |
| Garbage disposal | Full or blocked | Run disposal, check for knockout plug | Clear disposal | Free–$100 |
| Knockout plug | Not removed after install | Remove rubber disc from port | N/A | Free |
| Home's drain | Sink or plumbing backed up | Run hot water down sink | Call plumber | Plumber cost |
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:
| What You Check | What We Usually Find | DIY Fix | Professional Fix | Cost |
|---|---|---|---|---|
| Door gasket | Cracks, warping, or degradation | Clean with warm soapy water | Replace gasket | $100–250 |
| Machine level | Tilted forward or perfectly level | Adjust front feet for tilt | Leveling + inspection | $100–150 |
| Leak sensor | Corroded or electrically faulty | Clean sensor area with dry cloth | Replace sensor | $150–250 |
| Inlet connection | Loose or spraying water | Tighten connections | Reseat or replace valve | $100–200 |
| Condensation (tropical) | High humidity creating false trigger | Improve ventilation | Clean sensor, check seal | $50–150 |
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:
| Cause | Location | Symptoms | DIY Possible? | Professional Fix | Cost |
|---|---|---|---|---|---|
| Sensor failed | Inside tub wall | Consistent tE every cycle | No | Replace sensor | $150–250 |
| Loose electrical connection | Under tub | Intermittent tE errors | No | Reseat connector | $80–120 |
| Corrosion (coastal) | Sensor housing | tE after humid weather | No | Replace sensor + housing | $150–250 |
| Control board fault | Behind control panel | tE + other errors together | No | Control board repair/replace | $300–600 |
| Water damage to sensor | Sensor electronics | tE + signs of water | No | Replace sensor | $150–250 |
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:
| Cause | Symptom | Sound Test | Mechanical Test | Professional Fix | Cost |
|---|---|---|---|---|---|
| Motor brushes worn | Consistent bE every cycle | Humming but not spinning | Doesn't engage | Motor replacement | $300–500 |
| Motor winding burned | bE + burning smell | No sound at all | Motor doesn't respond | Motor replacement | $300–500 |
| Pump impeller stuck | bE + grinding noise | Grinding sound at start | Pump won't turn freely | Motor or pump replacement | $400–600 |
| Loose electrical connection | Intermittent bE errors | Sometimes hums, sometimes doesn't | Inconsistent engagement | Reseat connectors | $100–200 |
| Control board failure | bE + other error codes | Motor attempts to engage | No response to signals | Control board replacement | $400–800 |
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.
