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Samsung Washing Machine Error Code AP

⚠ High Severity 🔧🔧 Moderate DIY

Aqua Protection activated — flood protection triggered

Samsung's Aqua Protection anti-flood system has detected water in the base of the washing machine. The machine will drain and stop to prevent water damage.

💰 DIY cost: $0–$90 👨‍🔧 Pro cost: $150–$380 Save $150+ by doing it yourself

What Does Error Code AP Mean on a Samsung Washing Machine?

Aqua Protection activated — flood protection triggered.

Samsung's Aqua Protection anti-flood system has detected water in the base of the washing machine. The machine will drain and stop to prevent water damage.

What Causes Error Code AP?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Door seal torn or pulled away from channel 35% of cases
  2. 2
    Detergent oversudsing causing foam overflow into base 30% of cases
  3. 3
    Supply hose connection leaking at machine inlet 20% of cases
  4. 4
    Drain hose loose at pump connection 15% of cases

How to Fix Samsung Washing Machine Error Code AP

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Tilt the machine to drain the base

    Turn off power. Carefully tilt the machine forward to drain water from the base pan. Have towels ready.

    ⚠️ Turn off water supply and disconnect power before tilting.
  2. 2

    Allow base to dry

    Leave machine upright with door open for several hours.

  3. 3

    Inspect door seal

    Check the rubber door gasket for tears, pulled sections, or mold damage.

    🔩 Samsung door gasket ($40–$90)
  4. 4

    Check detergent amount

    Excessive suds can overflow into the base. Use HE detergent, max 1 tablespoon.

  5. 5

    Check hose connections

    Inspect supply hose both ends, pump outlet, and drain hose connection.

How to Reset Error Code AP

Drain base, fix leak source, let it dry completely, then restart. The float sensor resets when the base is dry.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

When to Call a Professional

If no visible external leak, the tub, drum bearing seal, or pump housing may have an internal leak requiring professional inspection.

Average professional repair cost for this issue: $150–$380

Related Error Codes

OE
Drain failure — water not draining
⚠ High Severity
DE
Door not properly closed or door lock failure
⚠ Medium Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your Samsung Washing Machine:

🔩
Search PartSelect
Samsung Washing Machine repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

Frequently Asked Questions

What does error code AP mean on a Samsung Washing Machine? +
Aqua Protection activated — flood protection triggered
How do I fix error code AP on my Samsung Washing Machine? +
Start by Turn off power. Carefully tilt the machine forward to drain water from the base pan. Have towels ready.. If that doesn't resolve it, work through each step in the fix guide above.
How do I clear or reset error code AP? +
Drain base, fix leak source, let it dry completely, then restart. The float sensor resets when the base is dry.
Is error code AP serious? +
This is a high-severity error. You should address it soon. Running the appliance may cause further damage.
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