KitchenAid Dishwasher Clean Light 9 Blinks: Diverter Valve Fault

Quick Answer

KitchenAid Clean light 9 blinks is a diverter fault, and on KitchenAid KDTM/KDPE models with the third rack and upper rack adjustment system, the diverter disc has an additional port compared to standard Whirlpool units - it must route water to three zones instead of two. The extra routing port creates an additional wear point on the disc seal. Hard water deposits on the diverter disc are the most common non-mechanical cause of 9-blink faults. Before replacing the diverter motor assembly, run a citric acid descaling cycle to see if mineral buildup is preventing the disc from rotating cleanly. The 9-blink code corresponds to the 9-1 numeric fault code on KitchenAid models with digital displays.

KitchenaidDishwasherSeverity: mediumDifficulty: intermediate77% DIY Success

Time to Fix

30–75 min

Difficulty

intermediate

Parts Cost

$30 – $65

Tools Needed

Multimeter, Torx T20 screwdriver

What Does the CLEAN-9-BLINK Code Mean?

KitchenAid Clean light 9 blinks means a diverter valve fault. On KDTM three-zone models, try a descaling cycle first - mineral deposits on the diverter disc are a common cause. If that fails, replace the diverter motor assembly.

Most Likely Causes

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

Mineral deposits preventing diverter disc from rotating40%

Diverter disc seal failure causing bypass24%

Diverter position switch failed22%

Diverter motor failure14%

Symptoms You May Notice

Clean light blinks 9 times after cycle
Dishes consistently dirty on upper or lower rack only
Dishwasher completes cycle but certain zones get no water
Unusual noise from the pump/diverter area during cycle

Can you reset a Kitchenaid dishwasher to clear the CLEAN-9-BLINK code?

After replacing the diverter assembly or after a successful descaling, restore power and run a normal cycle. The 9-blink code clears after a successful cycle with proper diverter operation. Disconnect power for 60 seconds before restoring to reset the stored fault.

Tools Required for Diagnosis

MultimeterTorx T20 screwdriverFlashlightCitric acid powder

Diagnostic Checklist

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

Run a citric acid dishwasher descaling cycle: add 2 tablespoons

Run a citric acid dishwasher descaling cycle: add 2 tablespoons of citric acid powder (or use a commercial descaler like Affresh) to the dispenser and run on the hottest cycle. Citric acid dissolves mineral deposits that commonly lock the diverter disc in one position on hard water installations.

Disconnect power

Test the diverter motor by disconnecting its wiring connector

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	OEM Number	Estimated Price
Diverter Motor AssemblyW10056316 · $30–$65	W10056316	$30 – $65

Verify part fitment for your Kitchenaid model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPAIR

Estimated Cost: $48 (Parts) vs $1000 (New Machine)

Frequently Asked Questions

What does the diverter valve do in a KitchenAid dishwasher?

The diverter valve controls which spray zone receives water pressure during the wash cycle. It rotates a disc that opens and closes water ports, sequentially directing water to the lower spray arm, upper spray arm, and on KDTM models, the third-rack spray bar. When the diverter fails, water only reaches one zone, resulting in poor cleaning in the zones that are not being served.

Can hard water cause KitchenAid Clean light 9 blinks?

Yes, and this is one of the most common causes on hard water installations. Mineral deposits build up on the diverter disc sealing surfaces and prevent the disc from rotating to its next position. The motor tries to advance the disc, fails to move it, and the control board registers a 9-blink fault. Running a citric acid descaling cycle resolves mineral-caused diverter faults without replacing any parts.

Is Clean light 9 blinks the same as 9-1 on my KitchenAid?

Yes. Clean light 9 blinks on models without a numeric display is the same diverter fault as 9-1 on models with a digital display. Both indicate a diverter valve or disc position fault. The diagnosis and repair are identical regardless of which display format your model uses.

Related Kitchenaid Dishwasher Error Codes

Code: HUBKitchenAid Dishwasher Error Codes: F8 E4, Clean Light Blinks, 8-4 Guide Code: 9-1KitchenAid Dishwasher 9-1 Error Code: Diverter Disc Fault Code: CLEAN-8-BLINKKitchenAid Dishwasher Clean Light 8 Blinks: Low Wash Performance

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-9-BLINK Errors

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

KDTM304ESS, KDTM354ESS, KDPE234GPS, KDTE234GPS

Last verified for technical accuracy on March 14, 2026