Quick diagnosis
What this code is telling you
Most likely trigger
water supply valve not fully open
Recommended replacement
Dishwasher Water Inlet Valve
Diagnostic path
4 ordered checks
Part fit
Exact model number required
Safety first
Before opening the appliance
Disconnect electrical power before removing panels or handling internal components. Do not bypass safety devices or perform live electrical testing unless you are qualified to do so.
Read the full safety disclaimerRoot cause
Why the control reported this error
The dishwasher is not receiving water at the pressure or temperature it expects because water supply valve not fully open. kinked or restricted inlet hose and inlet valve or water-pressure issue can produce the same code, so verify the fault before replacing components.
Possible causes
Check the most likely causes first
- 1
water supply valve not fully open
Start here when it matches your symptoms.
- 2
kinked or restricted inlet hose
- 3
inlet valve or water-pressure issue
Diagnostic sequence
Work through these checks in order
Stop when you find the fault. Do not perform a step that requires skills or live testing you are not qualified to do.
- 1
Check 1
Confirm the dishwasher water shutoff valve is fully open.
- 2
Check 2
Inspect the supply hose for kinks or pinching.
- 3
Check 3
Confirm household water pressure and temperature are normal.
- 4
Check 4
If water supply is correct and the code returns, service the inlet system.
Replacement part reference
Dishwasher Water Inlet Valve
Exact OEM part number
Model number required
Fitment note
The exact OEM part number varies by model and production revision. Verify the complete model number before ordering.
Verify the appliance model before ordering.
Manufacturers can use different parts under the same error code across model families and production revisions.
Where do I find my model number? →FixCodeDB may earn a commission from qualifying purchases made through affiliate links.
Common questions
Quick answers for this fault
What should I check first for 4C / 4E?
Start with water supply valve not fully open. If that checks out, continue through the diagnostic sequence above rather than replacing a part based on the code alone.
Does 4C / 4E always mean Dishwasher Water Inlet Valve is bad?
No. An error code identifies the condition the control detected, not a guaranteed failed part. Confirm the likely causes and wiring first. The exact OEM part number varies by model and production revision. Verify the complete model number before ordering.
When should I stop troubleshooting 4C / 4E myself?
Stop if the next step requires live electrical testing, sealed-system work, gas or combustion service, or any procedure outside your training. Disconnect electrical power before removing panels or handling internal components. Do not bypass safety devices or perform live electrical testing unless you are qualified to do so.
Manufacturer reference
Verify against the official support source
FixCodeDB summarizes the fault in plain language. For model-specific instructions, confirm the guidance with the manufacturer and your appliance manual.
Samsung Dishwasher Error Codes — Samsung Support →Was this useful?
Did these checks help with your Samsung 4C / 4E error?
Keep diagnosing
Related Samsung guides
The dishwasher reports 3C when the pump is not operating correctly.
3E means the incoming water supply is too hot for the dishwasher.
The dishwasher cannot drain water normally.
The Waterwall reflector is not able to move correctly on compatible Samsung dishwashers.
Different problem?
Search another code or symptom
Go back to the main diagnostic search and try the code, symptom, appliance, component, or brand.
Open diagnostic search →