The Samsung 3C error indicates the pump is operating below normal speed. Clean the drain filter thoroughly and check the pump impeller area for debris—glass, bones, or food particles are common culprits. If the pump area is clear but the error persists, the circulation pump motor may have failed.
| Error Code | 3C (also: None) |
|---|---|
| Meaning | Pump failure—circulation pump operating below 2000 RPM |
| Difficulty | Moderate |
| Time to Fix | Diagnosis: 30 min; Repair: Professional |
| Tools Needed | Towels, Flashlight, Gloves |
| DIY Fixable | Professional recommended |
| Official Source | Samsung Support |
The 3C error code on Samsung dishwashers indicates a pump operation failure. The error triggers when the circulation pump operates below 2000 RPM for more than 3 seconds, often indicating a physical blockage rather than motor failure.
What the 3C Error Code Means
When your Samsung dishwasher displays 3C, the control board has detected that:
- The circulation pump is running slower than expected (below 2000 RPM)
- The condition persists for more than 3 seconds
- Something is impeding pump operation
The most common cause is debris blocking the pump impeller—not actual motor failure. This makes cleaning attempts worthwhile before calling for service.
Model Coverage
This guide applies to Samsung dishwashers displaying 3C error codes:
- DW80CG, DW80BB, DW80B series (2022+)
- DW80R, DW80T series (2019-2022)
- DW80M, DW80K, DW80J, DW80N series (2015-2020)
Important: 3C vs. 3E
Samsung uses similar codes with different meanings:
| Code | Meaning |
|---|---|
| 3C | Pump failure—motor running slow or blocked |
| 3E | Incoming water too hot (above 176°F) |
This guide covers 3C pump failure. If you have 3E, check your water heater temperature setting.
Common Causes
The 3C error typically results from:
- Debris blocking pump impeller (glass shards, bones, food particles)
- Clogged drain filter restricting flow
- Kinked drain hose causing excessive pump resistance
- Defective circulation pump motor
Step-by-Step Diagnosis
Step 1: Clean the Drain Filter Thoroughly
A clogged filter can contribute to pump strain.
- Open the dishwasher and remove the bottom rack
- Locate the cylindrical filter at the bottom center of the tub
- Rotate the filter handle counterclockwise and lift out
- Remove the flat micro filter beneath it
- Rinse both filters under running water
- Use a soft brush to remove stubborn debris
- Wipe the sump area (the cavity under the filters) clean
Step 2: Inspect the Pump Impeller Area
With the filters removed, you can see into the sump where the pump impeller is located.
- Use a flashlight to look into the sump opening
- Wear gloves—sharp debris like broken glass may be present
- Look for:
- Glass shards (from broken glasses or dishes)
- Bones (from meat dishes)
- Seeds, pits, or hard food particles
- Plastic pieces or labels
- Carefully remove any visible debris
- If you can see the impeller (a rotating disc with blades), check that it’s not cracked or damaged
Small glass shards are the most common pump impeller blockage. They’re often invisible until you shine a light directly into the sump. Even tiny pieces can jam the impeller and trigger 3C errors.
Step 3: Check the Drain Hose
A restricted drain hose makes the pump work harder.
- Pull the dishwasher out slightly to access the back
- Trace the drain hose from the dishwasher to the drain connection
- Look for kinks, sharp bends, or pinched sections
- Straighten any problem areas
- Verify the hose isn’t clogged (you can disconnect and flush with water)
Step 4: Power Cycle the Dishwasher
After cleaning, reset the control system.
- Turn off the circuit breaker for 10 minutes
- Restore power
- Run a short cycle (Rinse Only or Quick)
- Monitor for 3C error return
Step 5: Listen to the Pump
If 3C returns, listen carefully to the pump operation.
What you might hear:
- Humming but no water movement: Impeller may be jammed or motor is failing
- Grinding or scraping: Debris still present or impeller damaged
- Normal pump sound followed by 3C: Motor may be overheating or failing intermittently
- Complete silence: Pump motor or wiring failure
When DIY Ends
The 3C error often requires professional service when:
- Debris is cleared but error persists
- The pump motor sounds abnormal
- You cannot access or see the impeller
- The error appears immediately upon cycle start
Pump motor testing (requires multimeter and technical knowledge):
- Access pump motor wiring (requires panel removal)
- Measure motor resistance: approximately 5.8 ohms expected
- Open circuit (infinite/OL) indicates motor failure
Safety Warnings
- Always wear gloves when reaching into the sump—broken glass is common
- Disconnect power before attempting to access pump components
- Don’t force the impeller to spin—you may damage seals
- Note any burning smell—could indicate motor failure
Typical Repair Costs
| Component | Part Cost | Total with Labor |
|---|---|---|
| Circulation pump assembly | $75-150 | $200-325 |
| Drain pump | $50-100 | $150-250 |
| Impeller only (if available) | $15-30 | $100-150 |
When to Call a Tech
Contact a professional if:
- 3C persists after thorough cleaning and debris removal
- You hear abnormal pump sounds (grinding, humming with no flow)
- The pump is completely silent
- You notice burning smell from the pump area
- The dishwasher is under warranty
What to tell the technician:
- Exact error code (3C)
- Any debris found during cleaning
- Pump sounds (humming, grinding, silent)
- Whether error appears at cycle start or mid-cycle
Preventing 3C Errors
- Scrape dishes before loading—remove bones, pits, seeds
- Check for cracked dishes that might shed glass fragments
- Clean the filter monthly to prevent debris accumulation
- Remove labels from new items before washing
Sources
For official Samsung support: