MaytagWasherCode SD

Maytag Washer SD / Sud Error Code - Excessive Foam Detection

SD or Sud code triggers when control board senses excessive suds in outer tub during cycle.

Quick diagnosis

What this code is telling you

Most likely trigger

Using non-HE laundry detergent

Recommended replacement

Washing Machine Cleaner Tablets

Diagnostic path

4 ordered checks

Part fit

Exact model number required

Safety first

Before opening the appliance

Unplug the appliance before removing panels or testing internal components. Do not bypass safety switches or live-test high-voltage, gas, refrigerant, or combustion components unless you are qualified to do so.

Read the full safety disclaimer

Root cause

Why the control reported this error

The washer sets this code when its control cannot confirm the expected wash-cycle condition. Start by ruling out using non-HE laundry detergent. overdosing detergent volume and clogged drain hose restriction can create the same feedback, so confirm the failure before replacing washing Machine Cleaner Tablets.

Symptoms

What you may notice

  • ✓Extra rinse cycles added automatically
  • ✓Sud or SD displays
  • ✓Washer pauses mid cycle

Possible causes

Check the most likely causes first

  1. 1

    Using non-HE laundry detergent

    Start here when it matches your symptoms.

  2. 2

    Overdosing detergent volume

  3. 3

    Clogged drain hose restriction

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. 1

    Check 1

    Allow suds to dissolve naturally; do not add extra soap.

  2. 2

    Check 2

    Switch exclusively to High-Efficiency (HE) detergent formulas.

  3. 3

    Check 3

    Reduce detergent dose by half for soft water or light loads.

  4. 4

    Check 4

    Run clean washer cycle with affresh cleaner tab to clear residue.

Replacement part reference

Washing Machine Cleaner Tablets

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? →
Search this replacement part on eBay →

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Common questions

Quick answers for this fault

What should I check first for SD?

Start with using non-he laundry detergent. If that checks out, continue through the diagnostic sequence above rather than replacing a part based on the code alone.

Does SD always mean Washing Machine Cleaner Tablets 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 SD myself?

Stop if the next step requires live electrical testing, sealed-system work, gas or combustion service, or any procedure outside your training. Unplug the appliance before removing panels or testing internal components. Do not bypass safety switches or live-test high-voltage, gas, refrigerant, or combustion components unless you are qualified to do so.

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