Samsung Dishwasher Error Code PE — How to Fix (Half-load function error)

What Does Error Code PE Mean?

The Samsung Dishwasher error code PE is a half-load function error that can be caused by a faulty water level sensor, water level sensor, or electrical issues. The water level sensor is responsible for detecting the correct water level in the dishwasher, and if it’s not working properly, the dishwasher may not wash dishes effectively or use more water than necessary. The error code PE can also be caused by blockages or debris in the sensor or surrounding area, which can prevent the sensor from working correctly.

Related issue? If your Samsung dishwasher is showing a different error code, see our guide on Samsung Dishwasher Error OC.

Common Causes

• Faulty water level sensor: The water level sensor can fail due to wear and tear, corrosion, or electrical issues.
• Water level sensor issues: The water level sensor can become clogged with debris or blocked by food particles, preventing it from working correctly.
• Electrical issues: Loose or corroded electrical connections can cause the water level sensor or water level sensor to malfunction.
• Blockages or debris: Food particles, detergent residue, or other debris can accumulate in the sensor or surrounding area, preventing the sensor from working correctly.
• Software issues: In some cases, a software glitch or outdated firmware can cause the error code PE.

Helpful Details

the Samsung Dishwasher error code PE can be model-specific, and some models may have different causes or solutions. When the fix involves replacing expensive components, or if the error code persists after trying the above steps, you should call a professional appliance technician. also, regular maintenance, such as cleaning the dishwasher filter and checking the electrical connections, can help prevent this error code from occurring in the future. For warranty information, you can contact Samsung’s customer support at 1-800-SAMSUNG (1-800-726-7864). The cost of replacing the water level sensor can range from $50 to $200, depending on the model and supplier. A professional repair can take around 1-2 hours, depending on the complexity of the issue.

Related Samsung Error Codes

If you’re troubleshooting your Samsung dishwasher, these related guides may help:

• Samsung Dishwasher Error OC
• Samsung Dishwasher Error tE
• Samsung Dishwasher Error 1E

Other Samsung appliance guides:

• Samsung Dryer Error dE
• [Samsung Washing Machine Error tE](/samsung/washing machine/error-te/)

What Does Samsung Dishwasher Error Code PE Mean?

When your Samsung dishwasher shows the PE error, it’s telling you that the half‑load function isn’t working right. The half‑load mode is supposed to save water and energy by running a shorter cycle when you only have a few dishes. The PE code appears when the machine can’t read the water level correctly or the sensor that monitors water height is acting up. Because of this, the dishwasher may over‑fill, under‑fill, or stop washing altogether. You’ll notice that dishes come out dirty, the appliance uses more water than normal, or it makes odd noises during the wash cycle.

In plain terms, the dishwasher thinks it’s got the wrong amount of water. That mis‑reading can lead to poor cleaning performance or wasted water, which is costly and frustrating. Fixing the PE code restores the half‑load feature and keeps your dishwasher running efficiently.

Common Causes of Error PE

• Dirty or clogged water level sensor – Food particles or mineral buildup can block the sensor’s tiny holes, preventing accurate water detection.
• Faulty sensor wiring – A broken or frayed wire between the sensor and control board can send the wrong signal.
• Improper installation of the sensor – If the sensor isn’t seated correctly in the tub, it won’t read the water level.
• Water inlet valve issues – A partially closed valve can cause the sensor to think the tank is full when it’s not.
• Control board glitches – Rarely, the electronic board that interprets sensor data may malfunction.
• Water hardness problems – Excessive limescale can corrode the sensor over time, reducing sensitivity.

How to Prevent Error PE

1. Clean the sensor regularly – Every 3–6 months, remove the sensor and rinse it under warm water. A soft brush can help get rid of stubborn deposits.
2. Check the inlet valve – Make sure the valve opens fully at the start of a cycle. If it’s stiff, use a gentle lubricant or replace it.
3. Inspect wiring connections – Periodically look for frayed or loose wires at the sensor and control board. Tighten or replace as needed.
4. Use a water softener – If you have hard water, install a whole‑house softener or add a dishwasher‑specific conditioner to reduce scale buildup.
5. Run a rinse‑only cycle – Once a month, run a rinse‑only cycle to flush out any debris that might have accumulated in the tub or sensor area.

Estimated Repair Costs

All prices are approximate and vary by region and model. Labor rates can differ, so call a local technician for an exact quote.

Frequently Asked Questions

Q: Can I just keep running the dishwasher with the PE error?
A: Running it will likely waste water and may damage the machine over time. It’s best to fix the sensor or call a technician before continuing.

Q: Does the PE code affect other dishwasher functions?
A: The error mainly impacts the half‑load cycle. Normal full‑load cycles usually work, but water usage can still be off if the sensor is faulty.

Q: How long does a water level sensor last on a Samsung dishwasher?
A: With proper maintenance, a sensor can last 5–7 years. Hard water or neglect can shorten its life.

Q: Is it safe to replace the sensor myself?
A: Yes, as long as you unplug the unit and use the correct part number (e.g., WLS‑1203). Follow the manufacturer’s wiring diagram for proper re‑installation.

Q: Will replacing the sensor fix the PE code permanently?
A: If the sensor and its wiring are the sole cause, a new sensor usually resolves the issue. If the problem recurs, other components like the control board may need inspection.