1C Moderate Easy DIY

Samsung Dishwasher 1C — Low water level / fails to start

Samsung Dishwasher · Error code 1C

What 1C Means

Low water level detected — dishwasher fails to start or stops early. Similar root causes to 9E but reported at start of cycle on some models.

Symptoms

  • 1C on display
  • Won't begin wash
  • Stops within minutes of starting
  • No fill sound

Common Causes

1
Closed or partially closed water supply

Angle stop not fully open.

2
Clogged inlet screen

Sediment blocking fill rate.

3
Faulty inlet valve

Solenoid weak — opens but flow is restricted.

4
Case/float switch stuck up

Falsely reports tub full so valve won't energize fully.

How to Fix It

  1. Verify the water supply valve under the sink is fully open.
  2. Inspect the fill hose for kinks behind the dishwasher.
  3. Shut off water, disconnect fill hose at the valve, and clean the inlet screen.
  4. Test that water flow at the supply line fills a quart container in under 10 seconds.
  5. If supply is good, suspect the inlet valve or case/float switch.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Samsung dishwasher water inlet valve View on Amazon→ Common replacement Samsung dishwasher case float switch View on Amazon→

More Samsung Dishwasher Codes

1E 1E / IE — Filter clogged / heater fault 3C 3C Error — Wash Pump Failure 3E 3E — Hot water supply too hot 4C 4C / 4E — Water Supply Error 4C5 4C5 / 4E5 — Fill timeout with dry tub 5C 5C / 5E — Drain Error

All Samsung codes → All dishwasher codes →

Verified against manufacturer documentation: samsung.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.