The **4C5** display on a Samsung dishwasher points to **water supply / pressure error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. Samsung appliances monitor whether a function reaches an expected state within a certain sequence. When that check fails, the control can store or display a code even though the root cause may sit elsewhere in the same circuit. The recorded display form is **4C5**. Search normalization stores it as **4C5** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error code4C5
ApplianceDishwasher
Quick answer
Water supply / pressure error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 4C5 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The **4C5** display on a Samsung dishwasher points to **water supply / pressure error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. Samsung appliances monitor whether a function reaches an expected state within a certain sequence. When that check fails, the control can store or display a code even though the root cause may sit elsewhere in the same circuit. The recorded display form is **4C5**. Search normalization stores it as **4C5** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
Depending on the exact model, the appliance can receive too little water or fail to confirm the expected water level.
While 4C5 is active, the code often appears near the beginning of a fill stage.
Depending on the exact model, water can enter slowly, intermittently, or not at all.
The 4C5 display becomes more meaningful if 4C5 appears during the dishwasher function associated with water supply / pressure error.
Depending on the exact model, the cycle may stop, drain, fail to fill/heat, or repeat a stage.
Why it happens
Possible causes
varies by model/region — cross-region baseline — Water supply / pressure error
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Before opening any service area, confirm the household water supply valve is fully open where the appliance uses one.
As an external check for 4C5, check accessible supply hoses for kinks and clean inlet screens only as described by Samsung.
Before opening any service area, verify whether water actually enters before the code appears.
The next non-invasive check is to verify hot/cold hose routing and water pressure when relevant to the exact appliance.
Before opening any service area, record the code before resetting.
As an external check for 4C5, verify water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
Important safety warning. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches. For 4C5, stop troubleshooting immediately if the symptom crosses into a safety hazard rather than a normal diagnostic condition.
Get help
When to request repair service
For 4C5, the service threshold is straightforward: If supply flow is proven good and the display returns, inlet valves, flow/level sensing, wiring, or control electronics may require diagnosis. Bring the exact model number and a photo of the display so the diagnosis stays tied to the documented Samsung code.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Resetting can clear a temporary state, not a persistent issue. If **4C5** comes back, preserve the code and move to the safe checks or model-specific service path.
Do not keep operating the appliance through a hazardous symptom just to see whether **4C5** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
The code alone is not enough to justify a part. **4C5** should narrow testing to the affected function; the final cause still has to be verified on the exact model.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Dishwasher 4C5** separate from same-looking codes used by other Samsung appliance families.
