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LG Dishwasher ✅ Safe for Now

LG Dishwasher Error Code PE

LG Dishwasher error code PE: Water pressure sensor failure.

Last reviewed: Last updated:

Methodology: We combine manufacturer references with recurring service patterns, then review for safe, step-by-step repair guidance.

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

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

How to Fix It Yourself

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

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