LG Washer E1 Error Code: Causes and Fixes
Quick answer: Water level pressure mismatch
What you’ll notice
Washer halts during fill or mid-cycle; water level pressure sensor is reading outside expected range.
LG
Washer
Code E1
high severity
LG models: LG front-load pump filters (WM series) are behind a small rectangular cover at the lower-left of the front panel. Top-load LG washers (WT series) have no user-serviceable pump filter. The LG ThinQ Smart Diagnosis feature transmits fault data by holding a phone to the power button — use this before disassembling.
Common causes
- Pressure sensor hose kinked, disconnected, or split
- Small amount of water or debris in the pressure sensor port
- Faulty pressure sensor
Step-by-step fix
- Unplug the machine.
- Locate the pressure sensor (usually a small round component connected by a thin clear hose, near the top of the machine).
- Check that the hose is connected at both ends and has no kinks or cracks.
- Blow gently through the hose to clear any water.
- Reconnect, power on, and run a test cycle.
Tools you may need
Screwdriver setFlashlight
Prevention
- Use the correct HE detergent dose — excess suds can force water into the pressure hose.
- Descale the machine every 3–6 months to keep sensors clear.
When to stop DIY
Replace the pressure sensor if the hose is intact but the error recurs across multiple cycles.
FAQ
What does E1 mean on LG washer?
E1 usually indicates: Water level pressure mismatch.
Can I keep using the appliance with E1?
Use caution. Severity is high. Replace the pressure sensor if the hose is intact but the error recurs across multiple cycles.
How long does this fix usually take?
Typical first-pass troubleshooting takes 20–30 minutes.