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Samsung·Dishwashermedium severity
Samsung Dishwasher Error Code 4C
Water supply error
Common Causes
- 1Water supply off
- 2Inlet valve clogged
Step-by-Step Troubleshooting
- 1
Check that the water supply valve under the kitchen sink is fully open. The dishwasher supply valve is typically the one closest to the dishwasher (left side under the sink)
- 2
Check the water inlet hose for kinks. Pull the dishwasher out slightly (disconnect power first) and inspect the supply line connection at the back
- 3
Inspect the water inlet valve filter screen — disconnect the supply line at the dishwasher inlet valve and check the small mesh screen inside for mineral buildup. Clean with vinegar and a toothbrush
- 4
Test the inlet valve electrically: with the machine running a fill cycle, check for 120V AC at the valve terminals. If voltage is present but no water flows, the valve is stuck closed and needs replacement
Pro Diagnostic Tip
Samsung dishwasher 4C codes in homes with hard water (common in Sacramento) are usually caused by a calcified inlet valve screen. Soaking the screen in CLR or white vinegar for 30 minutes dissolves the buildup and restores flow without replacing anything.
You Might Also Notice
- •Dishwasher starts but no water enters
- •Very slow fill times
- •Error appears at the beginning of the cycle
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$100–$225
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
Water inlet valve (Samsung DD62-00067A)Inlet screen/filter if missing or damagedWater supply line if corroded or kinked
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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What This Repair Involves
Here's what a professional technician does to resolve this issue:
Check water supply valve is open
This repair requires bearing pullers, drum spider wrenches, and diagnostic software for control board calibration. Most homeowners find it safer and more cost-effective to have a licensed technician handle it.
Safety First — Know the Risks
High-voltage components and pressurized water lines create flood and shock risk. A single loose fitting can cause thousands in water damage. Our techs are licensed and insured — let them handle the risk.
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Don't let error code 4C disrupt your day. A professional diagnosis takes about 30 minutes — and it's free when you proceed with the repair.
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Frequently Asked Questions
What does Samsung error code 4C mean?
Samsung error code 4C indicates: Water supply error. This is a medium-severity issue affecting your dishwasher.
How do I fix Samsung error code 4C?
Check that the water supply valve under the kitchen sink is fully open. The dishwasher supply valve is typically the one closest to the dishwasher (left side under the sink) Then, Check the water inlet hose for kinks. Pull the dishwasher out slightly (disconnect power first) and inspect the supply line connection at the back Then, Inspect the water inlet valve filter screen — disconnect the supply line at the dishwasher inlet valve and check the small mesh screen inside for mineral buildup. Clean with vinegar and a toothbrush There are 1 more steps — see the full troubleshooting guide above. If these steps don't resolve the error, contact a professional.
How do I know if my dishwasher has error 4C?
Besides the error code on the display, common signs include: Dishwasher starts but no water enters; Very slow fill times; Error appears at the beginning of the cycle. If you notice any of these symptoms, check your dishwasher's display panel for error code 4C.
How much does it cost to fix Samsung 4C?
Repair costs for Samsung 4C typically range from $100 to $225 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.