Samsung Dishwasher Error Codes — 4C/4E, 5C/5E, 3C, LC, OC, HE, bC2, 7E Complete Guide

Common Symptoms

• Error code displayed on the Samsung control panel mid-cycle or at cycle end
• Dishwasher fills slowly or not at all — 4C or 4E displayed
• Standing water remains after cycle — 5C, 5E, SC, or SE displayed
• LC or LE code appears — dishwasher shuts down mid-cycle
• Dishes are wet and cold — HE or tE displayed
• 3C code — dishwasher won't start washing or stops early
• 7E code on a WaterWall model — reflector or sensor fault

Most Likely Causes

1. 1

   4C / 4E — Water Supply Failure

   Samsung requires 20–120 PSI at the inlet valve to fill properly. Below 20 PSI triggers 4C/4E immediately. Check the water supply shutoff valve under the sink first — it must be fully open. The inlet valve has a mesh filter screen that clogs with sediment over time; a partially blocked screen causes slow fill and intermittent 4E codes. If the screen is clean and pressure is adequate, test the inlet valve solenoid resistance — typical spec is 900–1,200Ω. OL or short = failed valve, replace. Common inlet valve for DW80 series: DD62-00136A.

2. 2

   5C / 5E / SC / SE — Drain Failure

   Samsung uses a triple-layer filter system: a coarse mesh basket at the bottom, a fine cylindrical filter, and a micro-mesh screen beneath both. When any layer clogs, the drain pump cannot move water fast enough and 5C/5E triggers. The drain hose must loop up to at least 20 inches (measured from the floor) before connecting to the disposal or standpipe — without this high loop, water siphons back into the tub and triggers 5C on the next cycle. If the filter is clean and hose is routed correctly, test the drain pump by running a Drain-Only cycle and listening — silence during drain phase means the pump motor has failed.

3. 3

   3C — Wash Motor (Circulation Pump) Fault

   3C means the wash motor is not reaching operating RPM or has stalled. Primary causes: a foreign object (glass shard, bone chip, seed) lodged in the pump impeller, a failed wash motor winding, or a faulty motor control circuit on the main board. To check for an impeller blockage, remove the lower spray arm and filter assembly, then use a flashlight to inspect the sump cavity. On DW80 models, the wash motor is accessible from below after removing the lower access panel — the impeller can be manually rotated to check for binding.

4. 4

   LC / LE — Leak Sensor Triggered

   Samsung uses an optical sensor mounted in the base pan that detects any standing water — even a teaspoon of moisture trips LC/LE and shuts the unit down to prevent floor damage. The most common causes are a deteriorated door gasket, loose hose clamp at the pump or spray arm inlet, or an overfilled unit. After LC trips, the base pan must be dried completely before the code will clear. Remove the kick plate, soak up all water from the pan with towels, and run a short cycle while watching for drip sources.

5. 5

   OC / 0C — Overflow Error

   OC indicates the water level sensor detected an overfill condition. A stuck-open inlet valve solenoid allows water to continue filling past the set level. A clogged or jammed float switch in the tub bottom can also falsely trigger OC if the float sticks in the up position. Test the inlet valve: disconnect power, disconnect the water supply, and check if water continues to drip through the valve after power is removed — any flow with power off means the valve diaphragm is failed and must be replaced.

6. 6

   HE / tE — Heater or Thermistor Fault

   HE indicates the water temperature did not reach target during the wash cycle. tE indicates the thermistor (temperature sensor) reading is out of range. Test the thermistor first: with power off, disconnect the thermistor harness connector and measure resistance. Samsung dishwasher thermistors typically read 4,000–6,000Ω at room temperature (70°F). OL or near 0Ω = failed thermistor, replace. If thermistor tests good, test the heating element: measure continuity across the element terminals — should read 15–30Ω, not OL. Common thermistor part: DD81-01954A.

7. 7

   bC2 / PC — Stuck Button or Panel Communication Error

   bC2 indicates one or more control panel buttons are stuck in the pressed position or the panel is sending a continuous signal. PC is a panel communication error between the touchpad board and the main control board. Start with a 5-minute power-off reset. If bC2 returns, press each button firmly one at a time to release any mechanically stuck key. Moisture intrusion behind the touchpad membrane causes ghost presses — compressed air along the button seams sometimes clears it. If bC2 persists, the touchpad membrane panel needs replacement.

8. 8

   7E — WaterWall Reflector Error (WaterWall Models Only)

   7E is exclusive to Samsung WaterWall dishwashers (models with the water wall linear spray system instead of rotating spray arms). The 7E code means the WaterWall reflector bar cannot move freely or the position sensor is not detecting movement. Causes: debris blocking the reflector track, a failed reflector motor, or a sensor fault. Remove the lower rack and inspect the WaterWall reflector guide rails for food debris or broken glass. The reflector should slide smoothly the full length of the tub — any obstruction triggers 7E.

Quick DIY Checks

1. 1Power-cycle reset and code documentation: photograph the error code on the panel. Unplug the dishwasher from the wall outlet for 5 minutes (or kill the dedicated circuit breaker). Restore power and run a short cycle. If the same code returns, it is a real fault — proceed with targeted diagnosis. Do not skip this step: many LC and tE codes clear with a reset if the base pan moisture was condensation rather than an active leak.
2. 2Diagnose 4C/4E — water supply check: turn off the dishwasher. Confirm the supply shutoff valve under the sink is fully open (valve handle parallel to the pipe = open). Disconnect the water supply line from the inlet valve at the back of the dishwasher. Look at the brass inlet port — there is a mesh filter screen inside. Use a toothbrush under running water to clean the screen. Reconnect, turn on water, and test. If the 4E persists with clean screen and confirmed open supply valve, measure household water pressure with a gauge at the nearest faucet — must be 20–120 PSI. Below 20 PSI = call your utility or check the pressure-reducing valve.
3. 3Diagnose 5C/5E — Samsung triple filter cleaning and drain hose height check: remove the lower rack. In the center of the tub floor, locate the cylindrical fine filter — twist it counterclockwise and lift out. Remove the flat coarse mesh basket beneath it. Rinse both filters under hot running water; use a soft brush on the fine micro-mesh. Reinstall filters. Under the sink, trace the drain hose — it must arch up to at least 20 inches above floor level before dropping to the disposal or standpipe connection. A hose that runs low or flat will siphon water back into the tub. After cleaning filters and confirming hose height, run a Drain/Spin cycle to test.

1. 4Diagnose LC/LE — base pan drying and leak source identification: with power off, remove the toe kick panel at the bottom front of the dishwasher (usually two screws or snap-off tabs). Use a flashlight to look into the base pan — any standing water here has triggered LC. Soak up all water with towels or a turkey baster. With the base pan dry, restore power and run a short hot cycle while watching from the floor level for any drips. Common leak points: door gasket (inspect full perimeter for cracks or deformations), spray arm hub O-ring, and the drain pump outlet hose clamp.
2. 5Diagnose 3C — wash motor impeller check: power off and unplug. Remove the lower rack, then remove the lower spray arm (usually counterclockwise). Remove the filter assembly. Use a flashlight to look straight down into the sump. You should see the wash pump inlet — check for glass, bone shards, or pits that could jam the impeller. If an object is visible, use needle-nose pliers to extract it. After clearing, rotate the visible impeller hub manually with your finger — it should spin freely with light resistance. Hard stop or grinding resistance = debris still present or damaged impeller.
3. 6Diagnose HE/tE — thermistor and heating element test: unplug the dishwasher. The thermistor is typically clipped to the tub wall near the heating element at the bottom of the tub. Disconnect the thermistor harness and measure resistance at room temperature — spec 4,000–6,000Ω. OL = failed. For the heating element, the element runs around the perimeter of the tub floor. Disconnect both element leads and measure resistance — spec 15–30Ω. OL = failed element, replace. Both parts are accessible from inside the tub without pulling the dishwasher out.
4. 7Enter Samsung diagnostic mode to confirm fault codes: on most DW80 series models (DW80R9950US, DW80T5040US, DW80M9550US), press and hold the Start and Hi-Temp buttons simultaneously for 3 seconds until all indicator lights illuminate. The dishwasher runs a full self-test sequence cycling through water fill, wash motor, heater, and drain. After the test, stored fault codes are displayed sequentially. This procedure helps confirm which subsystem is actually failing versus a spurious code from condensation or a power transient.

Repair vs Replace

Recommended Tools & Parts

• Samsung Dishwasher Triple Filter Assembly

  Replacement filter kit including cylindrical fine filter, coarse mesh basket, and micro-mesh screen for Samsung dishwashers. Clean monthly — the leading cause of 5C/5E drain codes. Verify compatibility with your DW80 model number.

  $15–$35

  Buy on Amazon →

• Samsung Dishwasher Water Inlet Valve — DD62-00136A

  Replacement inlet valve solenoid for Samsung DW80 series dishwashers. Required when 4C/4E persists after cleaning the filter screen and confirming adequate water pressure. Includes mesh filter screen. Check model compatibility before ordering.

  $30–$60

  Buy on Amazon →

• Samsung Dishwasher Thermistor — DD81-01954A

  NTC temperature sensor for Samsung dishwashers. Reads 4,000–6,000Ω at room temperature. Clips to the tub wall near the heating element. Causes tE error codes when failed. Confirm part number against your model.

  $15–$30

  Buy on Amazon →

• Samsung Dishwasher Heating Element

  Replacement heater assembly for Samsung dishwashers. Mounts around the tub floor perimeter. Resistance spec: 15–30Ω. Required when HE code persists after thermistor tests good. Model-specific — verify with your DW80 model number.

  $35–$75

  Buy on Amazon →

• Samsung Dishwasher Door Gasket / Door Seal

  Perimeter door seal for Samsung dishwashers. Cracked or deformed gaskets allow water into the base pan, triggering LC/LE codes. Inspect the full gasket for tears before ordering — replacement is straightforward with no tools required on most DW80 models.

  $20–$45

  Buy on Amazon →

Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.

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