Samsung Dishwasher Error Code: PE — What It Means
The PE error on a Samsung dishwasher is typically a water-level or pressure-related fault indicator. In many Samsung models, “PE” points to an issue with the dishwasher’s ability to sense or control water flow and level (for example a pressure sensor, float switch/assembly, or flow path blockage). It can also surface after power interruptions or when the electronic control detects inconsistent signals from the inlet/drain circuits. When the dishwasher displays PE, users commonly experience interrupted cycles, incomplete rinses, longer drying times, or a machine that won’t start or finish a program. In some cases, the issue can increase the risk of leaks, overheating of components (if pumps run dry), or water overflow if a sensor fails to shut off the inlet — so it should be diagnosed and addressed promptly.
Common Causes
- Faulty or stuck float switch / water level sensor preventing correct level detection
- Clogged inlet filter or low water pressure causing insufficient water flow
- Blocked or kinked water supply hose
- Malfunctioning water inlet valve (won’t open or close properly)
- Obstructed drain pump or filter assembly causing backpressure
- Damaged flow/pressure sensor or flow meter (if present on the model)
- Loose or corroded wiring/connectors between sensors and the control board
- Defective electronic control board (PCB) or user interface board reporting false errors
- Door latch/switch faults causing the machine to pause or report sensor inconsistencies
- Recent power surge, outage, or software glitch requiring a reset
Troubleshooting Steps
- Power cycle the dishwasher: turn off at the wall or breaker for 1–2 minutes, then restore power to clear transient errors.
- Reset the control: run the factory diagnostics or a reset sequence if your model manual lists one (consult the user manual/model service guide).
- Check the water supply: ensure the household water supply valve is fully open and incoming water pressure is normal.
- Inspect the inlet hose and filters: turn off water, disconnect the inlet hose and clean the inlet filter/screen to remove debris or mineral buildup.
- Examine the float assembly and float switch: open the dishwasher base (power off first) and confirm the float moves freely and the switch is not stuck or obstructed by debris.
- Clean the dishwasher filter and drain area: remove and clean the bottom filter, check for debris blocking the sump or drain pump that could affect flow sensing.
- Check the drain pump and hoses: ensure the drain pump is not jammed and hoses are free of kinks or blockages causing backpressure.
- Inspect wiring and connectors: look for loose, burned, or corroded connectors between