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Error Code Reference

KitchenAid Washer Error Code SUD

The SUD error indicates excessive suds or foam detected in the wash tub, which can prevent proper draining and cycle completion. This error typically triggers when the washer's suds sensor detects an abnormal amount of soap buildup during the wash cycle.

Technical Advisory
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Signs

What you may observe

• Wash cycle stops or pauses unexpectedly • Error code SUD displays on the control panel • Water drains slowly or incompletely from the tub • Excessive foam or bubbles visible in the wash tub • Cycle cannot progress to the rinse or spin phase • Washer may emit a buzzing or humming sound while trying to drain

Possible Causes

Root causes behind this error

• Excessive detergent used in the wash load • Using non-HE (High-Efficiency) detergent in an HE washer • Detergent dispenser clogged or malfunctioning • Water temperature too low, causing detergent to not dissolve properly • Drain pump filter clogged with lint or debris • Drain hose kinked or blocked, preventing water from draining • Faulty suds sensor requiring replacement • Detergent residue buildup in the tub or internal hoses • Mixing multiple detergent types in a single load • Washer not installed level, affecting drainage efficiency

Safety Checks You Can Do

Steps you can try at home safely

• Turn off the washer and open the door or lid to manually remove excess water and suds using towels or a bucket • Check that you are using the correct amount of detergent according to the load size and soil level recommended on the detergent bottle • Verify you are using HE (High-Efficiency) detergent if your KitchenAid washer is an HE model • Inspect the drain hose for kinks, twists, or pinches and straighten if necessary • Verify the drain hose is not inserted too far into the standpipe (should be 4-6 inches) • Check that the washer's drain pump filter is accessible and clear of lint and debris buildup • Ensure the washer is installed level by using a spirit level on the top edge • Review your washer's control panel settings to confirm you selected the appropriate cycle and water temperature • Run a clean cycle with hot water and no clothes to help rinse away suds buildup • Verify all water supply valves behind the washer are fully open (turned counterclockwise) • Check that the power cord is plugged securely into a working 120V outlet • Reset the washer by turning off the circuit breaker for 60 seconds, then turning it back on • If the error persists after these checks, the suds sensor or drain pump may require professional service
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