LG Dryer Error Code nP

The nP code means the dryer is detecting an incorrect or incomplete power supply. LG electric dryers require a 240-volt, dual-leg circuit, and nP appears when that supply is missing or improperly wired. The cause is typically a tripped circuit breaker, a blown fuse, or a loose power cord connection at the terminal block on the back of the dryer. The issue is with the home electrical supply or the cord installation, not the dryer's internal components.

The nP code itself indicates a power supply problem rather than a dangerous fault inside the dryer, but the underlying cause can involve electrical hazards. Loose connections at the terminal block can cause arcing and overheating over time. If you are not comfortable inspecting wiring or working near the electrical panel, it is best to have a qualified electrician or appliance technician handle the diagnosis before operating the dryer again.

The cost depends entirely on the cause. Resetting a tripped breaker or tightening a loose terminal connection costs nothing. Replacing a blown fuse in the panel is typically a low-cost fix, usually between a few dollars and around $20 for the fuse itself. If the power cord needs to be replaced, expect to pay somewhere in the range of $20 to $60 for the part. If an electrician is needed to diagnose or repair the household circuit, service call and labor fees will add to that cost.

Start by going to your home's electrical panel and checking the double-pole circuit breaker for the dryer. If it has tripped, switch it fully to the off position and then firmly back to on. Next, unplug the dryer and inspect the power cord connections at the terminal block on the back of the unit, making sure all wires are tight and connected to the correct terminals. If your home has a fuse panel, test and replace any blown fuses on the dryer circuit.

Yes, if a tripped breaker was the cause, resetting the breaker and then restarting the dryer should clear the nP code. You can also unplug the dryer for 10 to 15 seconds and plug it back in to reset the control board after restoring power. If the code returns immediately or the breaker trips again, there is likely an underlying wiring or appliance issue that needs further investigation before continued use.