What does LG Range PE Error Code - Causes & Fix mean?

PE on an LG range means low voltage detected. Turn off the unit, flip the breaker off for 30 seconds, then restore power.

How do I fix LG Range PE Error Code - Causes & Fix?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for LG Range PE Error Code - Causes & Fix?

The most frequently replaced parts for LG Range PE Error Code - Causes & Fix are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is LG Range PE Error Code - Causes & Fix a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

LG Range PE Error Code - Causes & Fix

LG Range PE Error Code — What It Means

The PE error code on an LG range indicates a low-voltage fault detected by the appliance’s control system. The range is receiving insufficient electrical power to operate safely and reliably.

This is not a mechanical or internal component failure inside the range itself. Instead, it points to an issue with the external electrical supply reaching the appliance, such as inadequate voltage from the circuit breaker panel, loose connections at the outlet or terminal block, or problems with your home’s overall electrical service.

Jump to Fix

Common Causes

Insufficient incoming voltage Your home’s electrical service or utility supply is delivering less than the required voltage to the range circuit.
Loose or corroded terminal-block connections The wire connections at the back of the range where the power cord or hardwire enters can develop poor contact over time.
Tripped or weak circuit breaker The dedicated 40 or 50 amp breaker for the range may be failing or not making full contact in the panel.
Faulty wall outlet or receptacle If your range uses a plug-in connection, the receptacle itself can have internal damage or loose wiring that drops voltage.
Undersized or damaged house wiring The circuit feeding the range may have wire gauge too small for the load or damaged insulation causing voltage drop under load.
Main panel or service-entrance problems Loose connections in your main electrical panel or at the meter base can starve all downstream circuits, including the range.

Step-by-Step Fix

Turn the range off by pressing the Power ON/OFF button and wait one minute for the control board to reset.
Flip the circuit breaker off for the range at your main electrical panel, wait 30 seconds, then flip it back on to cycle power to the appliance.
Turn the range back on and observe whether the PE code reappears immediately or during heating.
Inspect the terminal block at the rear of the range by removing the lower back access panel and checking that all power wires are tight and free of corrosion.
Check the circuit breaker in your panel by confirming it is fully seated in the ON position and not warm to the touch, which can indicate a failing breaker.
Test the outlet (if applicable) by inspecting the receptacle for scorch marks, loose prongs, or any visible damage, and consider having voltage measured at the plug with a multimeter.
Call a licensed electrician if the code persists after these checks, because low voltage requires professional diagnosis of your home’s electrical system.

Parts Often Needed

Part	Notes
40 or 50 amp double-pole circuit breaker	Amazon \| Match the exact amperage and brand of your existing panel when replacing a suspected weak or failing breaker.
Range power cord or terminal block connector kit	Amazon \| Use only if existing wiring or terminals show visible burn marks or corrosion.

When to Call a Pro

LG specifies that a qualified electrician is required if the PE code returns after power cycling. Low-voltage faults are an electrical-service issue, not a range appliance repair, so attempting component replacement inside the range will not solve the problem. An electrician can measure voltage at the outlet and panel, identify loose or undersized wiring, and make sure your home’s electrical system can safely deliver the full voltage and amperage the range requires. Do not continue using the range if the code appears repeatedly, because sustained low voltage can damage the control board and other electronic components over time.