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KitchenAid Dishwasher Clean Light 8 Blinks: Low Wash Performance

Quick Answer

KitchenAid Clean light 8 blinks is a wash performance fault, and on KitchenAid models with the upper rack adjustment and third rack (KDTM/KDPE series), there are two additional causes not present on standard Whirlpool units: a blocked third-rack spray bar and upper rack adjustment that creates an overfill gap.

KitchenAid Clean light 8 blinks is a wash performance fault, and on KitchenAid models with the upper rack adjustment and third rack (KDTM/KDPE series), there are two additional causes not present on standard Whirlpool units: a blocked third-rack spray bar and upper rack adjustment that creates an overfill gap. The third rack in KDTM models has a dedicated water supply tube running along the top of the tub interior - if this tube gets blocked by food debris or the nozzles clog with mineral deposits, the top rack gets no water and the 8-blink performance fault appears. Clean all three spray arms and the third-rack supply tube nozzles before checking anything else.

KitchenaidDishwasherSeverity: low90% DIY Success
Time to Fix
15–45 min
Difficulty
beginner
Parts Cost
$25 – $55
Tools Needed
Toothpick, Soft brush

What Does the CLEAN-8-BLINK Code Mean?

KitchenAid Clean light 8 blinks means low wash performance. On KDTM third-rack models, clean the third-rack spray bar nozzles first. Also clean the filter, unclog spray arm holes, and check water temperature.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Blocked third-rack spray bar nozzles (KDTM/KDPE models)40%
Clogged spray arm holes reducing water pressure24%
Low household water temperature entering dishwasher22%
Clogged filter reducing pump flow14%

Symptoms You May Notice

  • Clean light blinks 8 times after a cycle completes
  • Dishes are not fully clean after a normal cycle
  • Food residue remaining on dishes, especially top rack
  • Glasses showing white film or spotting

Can you reset a Kitchenaid dishwasher to clear the CLEAN-8-BLINK code?

After performing all cleaning steps, run a full normal cycle with a dishwasher cleaner tablet or white vinegar. The 8-blink code clears once the wash performance meets the minimum threshold in a subsequent cycle. No power reset is required.

Tools Required for Diagnosis

ToothpickSoft brushWhite vinegar

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

On KitchenAid KDTM and KDPE models with a third rack: remove the

On KitchenAid KDTM and KDPE models with a third rack: remove the third rack and inspect the spray bar that supplies it - a horizontal tube running along the inner top of the tub or mounted under the top rack. Unclip or unscrew the spray bar and rinse it under running water. Use a toothpick to clear any clogged spray nozzles.

2

Remove the upper and lower spray arms (pull or twist off

3

Remove and clean the filter assembly at the bottom of the tub

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Third Rack Spray Bar (KDTM models)W10727422 · $25–$55

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $40 (Parts) vs $1000 (New Machine)

Frequently Asked Questions

My KitchenAid KDTM dishwasher shows 8 blinks but the bottom rack dishes are clean - only the top is dirty. What does that mean?
On KDTM models with a third rack, this specific symptom points to the third-rack spray bar being clogged. The upper rack depends on the third-rack spray tube for water distribution. When that tube is blocked with mineral deposits, the upper rack gets little to no water while the lower rack (fed by the main spray arm) remains clean. Remove the third rack, unclip the spray bar, and clean each nozzle.
How do I prevent Clean light 8 blinks on my KitchenAid dishwasher?
Clean the filter monthly, clean spray arms quarterly, and run a dishwasher cleaner cycle every 1-2 months. If you have hard water, use a rinse aid and consider a dishwasher descaler treatment every 3 months. On KDTM models, periodically remove and clean the third-rack spray bar since it accumulates mineral deposits more quickly than the larger spray arms.
Does Clean light 8 blinks mean my KitchenAid dishwasher is broken?
No. 8 blinks is a maintenance reminder and performance fault, not a component failure. In over 90% of cases it resolves with a thorough cleaning of the filter, spray arms, and on KDTM models the third-rack spray bar. No parts replacement is needed. If 8 blinks persists after thorough cleaning, the heating element or water thermistor may also be affecting wash performance.

Related Kitchenaid Dishwasher Error Codes

Code: HUBKitchenAid Dishwasher Error Codes: F8 E4, Clean Light Blinks, 8-4 GuideCode: CLEAN-7-BLINKKitchenAid Dishwasher Clean Light 7 Blinks: Heater FaultCode: CLEAN-9-BLINKKitchenAid Dishwasher Clean Light 9 Blinks: Diverter Valve Fault

Same Fix Works on These Brands

Kitchenaid shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience CLEAN-8-BLINK Errors

This repair applies to most Kitchenaid dishwashers with this error code. Common model numbers include:

KDTM304ESS, KDTM354ESS, KDPE234GPS, KDTE234GPS, KDFE104HPS

Last verified for technical accuracy on March 14, 2026