LG Dishwasher ✅ Safe for Now

LG Dishwasher Error Code PE

LG Dishwasher error code PE: Water pressure sensor failure.

Last reviewed: Aug 7, 2026 Last updated: Aug 7, 2026

Methodology: Reviewed against official Lg dishwasher support guidance, then grouped by fault family before separating owner-safe checks from technician-level diagnosis.

Sources: Manufacturer fault-code sheets, service manuals, and recurring field-repair patterns.

LG Support - Dishwasher troubleshooting — Official LG support library used for dishwasher error-code and troubleshooting references.

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

Should I unplug it?

✅ No — safe for now

Safe to use briefly. A faulty sensor causes poor performance but rarely immediate danger.

Can I fix it myself?

DIY Possible

Part: Temperature sensor / thermistor

How much will it cost?

DIY: $10–$60 (sensor)

Technician: $80–$250

⏱ 20–45 min

What Does Error PE Mean on Your LG Dishwasher?

LG Dishwasher error code PE: Water pressure sensor failure.

What typically fails: Temperature sensor / thermistor

What You're Probably Seeing

→ Error code on display
→ Cycle not completing
→ Machine stopping unexpectedly

Common Causes

• Door latch not fully engaging before cycle start
• Latch switch or strike misalignment
• Loose latch wiring or failed door-switch circuit

How to Fix It Yourself

1 Unplug the dishwasher for 60 seconds then plug back in — this resets the control board and clears many temporary faults
2 Test the sensor with a multimeter — check resistance against the spec in the service manual
3 Inspect the sensor's wiring harness for corrosion or loose connector
4 Replace the sensor if out of spec ($10–$50 part)
5 If the error persists after basic troubleshooting, contact a qualified appliance technician

🛠️ You'll need: Multimeter, Screwdriver set · Time: 20–45 min

💡 Try this first: Unplug the appliance for 60 seconds, then plug back in. This resets the control board and clears many temporary faults.

Questions People Also Ask

What does LG Dishwasher error code PE mean? ▼

Error code PE on a LG Dishwasher means: Water pressure sensor failure. The appliance detected this condition and has stopped or limited operation to prevent further damage.

How do I fix LG Dishwasher error code PE? ▼

First, unplug the dishwasher for 60 seconds to reset the control board. If error PE returns, the root cause (water pressure sensor failure) needs to be addressed — check connections, filters, and hoses before calling a technician.

Is it safe to use my LG Dishwasher with error code PE? ▼

It depends on the cause. Most PE errors mean the appliance has stopped itself as a safety measure. Check the 'Should I unplug it?' section above for specific guidance on this error.

More LG Dishwasher Codes

All LG dishwasher error codes → All LG appliance codes →