Samsung dishwashers use alphanumeric error codes like 4C, 5C, LC, and OC to diagnose issues across DW80, Waterwall, and linear wash models, displayed on digital panels or as blinking lights on basic units.
Codes fall into water supply, drainage, leaks, heating, and control categories, enabling targeted fixes before service calls.
Most resolve with basic cleaning or resets; persistent codes indicate component failure.
Complete Samsung error code table
| Code | Meaning | Primary Causes | Step-by-Step Solution |
|---|---|---|---|
| 1E/IE | Clogged filter (Waterwall) | Filter/screen blocked; packing tape | Remove racks, clean coarse/fine filters, clear sump; remove spray arm tape |
| 3C | Pump motor failure | Pump jammed or seized | Power reset; spin impeller freely; pro service if silent |
| 3E | High water temp supply | Supply >176°F (80°C) | Verify heater setting <80°C; run cold fill cycle |
| 4C/4E | Water supply/inlet error | Closed valve, clogged screen, low PSI | Open valve fully, vinegar‑clean inlet filter, test PSI (20–120) |
| 5C/5E/SC/SE | Drain error | Filter/sump/hose clogged | Clean filters/sump, flush hose at sink, check disposal/air gap |
| 7E | Waterwall reflector fault | Tape/blockage; misaligned arm | Remove packing tape, reposition reflector, clear spray path |
| 9E | Low water level | Prior empty cycle residue | Run empty Normal cycle with detergent |
| AP | Access point/WiFi mode | Smart connection glitch | Power cycle; skip WiFi if not connecting |
| 6E/bE | Button stuck | Panel wet/stuck key | Press all buttons 10s; wipe dry; power cycle |
| CE | Communication/control error | Board glitch | Unplug 10 min; run test cycle |
| HC/IE (rotary) | Heater overheat | Excessive temp rise | Empty + Normal cycle; check supply temp |
| HE/tE | Heater/sensor failure | Element/thermistor fault | Empty Normal cycle; test element ohms if recurs |
| LC/LE | Leak/base moisture | Hose leak, suds, base wet | Dry base pan, inspect hoses/gasket, vinegar cycle |
| OC/0C/oE | Over‑level water | Slow drain + fill | Clean filter/sump/hose (like 5C); check level sensor |
| PC | Zone wash diverter error | Diverter motor/door wiring | Power reset; check door alignment |
| PE | Half‑load function error | Load sensor glitch | Run empty half‑load cycle |
Water system errors (most common)
4C/4E (No fill):
Valve → Screen → Hose → Pressure. 70% screen clogs.
5C/5E (No drain):
Filter → Sump → Hose → Pump. Glass shards common in impeller.
LC/LE (Leak):
Base dry → Hoses → Gasket → Suds. Safety lockout.
OC (Overfill):
Drain + sensor hybrid. Clean first, then valve test.
Heating errors
HE/tE: Run detergent cycle; clears residue 60% time.
3E: Supply too hot check water heater.
HC: Overheat protection; power cycle.
Mechanical faults (Waterwall specific)
1E/7E: Reflector arm issues packing tape/removal frequent.
3C: Pump replacement (~$150).
Universal troubleshooting steps
- Power reset: Breaker off 10 min.
- Water prep: Run sink 2 min (purge cold).
- Filter/sump clean: Racks out, twist filters, flashlight sump check.
- Hose inspect: Inlet/drain no kinks, secure clamps.
- Test cycle: Empty Rinse; watch fill/drain.
Model‑specific display notes
| Panel Type | Code Format | Example Equivalent |
|---|---|---|
| Digital | 4C, LC, OC | Direct text |
| LED | Blinking pairs | Rinse+Heavy = 4C |
| Rotary | HC, IE | High temp/heat errors |
Check manual for light patterns.
Parts & repair costs
| Issue | DIY Part Cost | Pro Total |
|---|---|---|
| Filter set | $15–25 | $100 |
| Drain pump | $80–120 | $250 |
| Inlet valve | $25–45 | $180 |
| Leak sensor | $30–50 | $200 |
| Main board | $150–300 | $400+ |
When to call service
- Recurring post‑clean: Pump/board/sensor.
- Noises/vibration: Impeller or suspension.
- Heater codes persist: Element/thermistor.
- LC with dry base: Sensor wiring.
Prevention schedule
- Weekly: Filter rinse.
- Monthly: Sump clean, vinegar cycle.
- Quarterly: Hose clamps, inlet screen.
- Annual: Level check, gasket inspect.
FAQs: Samsung Dishwasher Error Codes
4C vs 5C?
4C=no water in; 5C=no water out.
LC safe to ignore?
No leak risk; dry base first.
All lights blinking?
Drain fault (5C equivalent).
Reset clears all?
50% yes; clean required for blockages.
Waterwall codes unique?
1E/7E reflector; rest universal.