Kenmore Dishwasher Water Inlet Valve Replacement Guide — Cost, Signs & DIY Tips

The water inlet valve controls the flow of water from your home supply into the dishwasher tub. When it fails, your Kenmore dishwasher either will not fill, fills too slowly, or fills continuously and overflows. The valve design varies by OEM manufacturer — Whirlpool-built models (665-prefix) typically use a single-solenoid valve, while LG-built Kenmore Elite models (722-prefix) may use a dual-solenoid valve that controls fill for different cycle phases independently.

Decode Your Model Number

• 665 — Whirlpool: Single-solenoid inlet valve. Located at the bottom-left of the dishwasher behind the kickplate, connected to the household water supply.
• 722 — LG (Kenmore Elite): Dual-solenoid valve or single depending on model year. Same general location.
• 587 — Frigidaire: Single-solenoid, similar position.

The valve connects to the household hot water supply line on one side and a fill hose into the tub on the other. It is an electrically operated valve — the control board sends voltage to open the solenoid, allowing water to flow.

Signs Your Kenmore Dishwasher Water Inlet Valve Needs Replacement

Valve not opening (no fill):

• Dishwasher starts the cycle but no water enters the tub — you hear the motor and pump running dry
• Extended fill time followed by an error code (Whirlpool-based models may show a flashing Clean indicator; LG-based models show an IE or FE code)
• The dishwasher has power and the door latch engages, but the cycle stalls at the fill phase

Valve stuck open (continuous fill or overfill):

• Water continues to fill even after the cycle ends or the dishwasher is turned off
• Water on the kitchen floor from overflow
• The float switch triggers repeatedly but cannot stop the fill because the valve is mechanically stuck open

Valve partially blocked (slow fill):

• Cycles take much longer than normal because fill phases are extended
• Dishes come out poorly washed due to insufficient water volume
• You hear water trickling slowly rather than a strong flow during the fill phase

Before condemning the valve, check:

• Home water supply is turned on and the shutoff valve under the sink is fully open
• The supply line to the dishwasher is not kinked
• The inlet screen (small mesh filter inside the valve inlet) is not clogged with sediment — this is the most common non-valve cause of slow fill. Remove the supply line from the valve and inspect the screen.
• Water pressure is adequate (minimum 20 PSI for most dishwashers — if other fixtures in the house have low pressure, the valve is not the problem)

Water Inlet Valve Cost Breakdown

The inlet valve is a moderately priced part with a straightforward replacement procedure. The OEM cross-reference applies — search the Whirlpool part number rather than the Kenmore-branded equivalent.

How to Replace the Water Inlet Valve

1. Disconnect power at the breaker
2. Turn off the water supply valve under the sink
3. Remove the lower kickplate panel (2 screws, Phillips #2)
4. Place towels and a shallow pan under the valve area
5. Disconnect the water supply line from the valve inlet using pliers or a wrench — water will drain from the line
6. Disconnect the fill hose from the valve outlet (this goes into the tub). Release the hose clamp with pliers.
7. Disconnect the electrical connector from the valve solenoid (single 2-wire plug on Whirlpool, may be a larger connector on LG)
8. Remove the valve mounting bracket screws (typically 1–2 screws)
9. Remove the old valve and compare with the new one — verify the inlet and outlet positions match
10. Before installing the new valve, check the inlet screen — new valves usually come with a fresh screen, but verify it is in place
11. Mount the new valve, reconnect the fill hose with a new or undamaged hose clamp
12. Reconnect the water supply line — hand-tighten the fitting, then snug with pliers (do not overtighten brass fittings)
13. Reconnect the electrical connector
14. Turn on the water supply and check for leaks at both connections before restoring power
15. Restore power and run a fill cycle — the tub should fill within 2–3 minutes to the proper level

Tools required: Adjustable wrench or pliers, Phillips #2, 1/4-inch nut driver, shallow pan, towels. Total time: 30–45 minutes.

When to DIY vs. Call a Professional

• DIY-friendly: The inlet valve is one of the more accessible dishwasher components — it is right behind the kickplate with no need to pull the dishwasher out. The connections are standard plumbing and basic electrical. 30–45 minutes for a first-time repair.
• Call a professional if: The valve is leaking at the connection to the household supply and you cannot get the fitting to seal (corrosion or cross-threading), or if replacing the valve does not fix the fill issue (the control board may not be sending voltage to the valve solenoid — this requires electrical diagnosis).

How Long Does a Kenmore Dishwasher Water Inlet Valve Last?

• Whirlpool-built (665-prefix): 6–10 years. The rubber diaphragm inside the valve hardens over time, eventually preventing proper opening or closing.
• LG-built (722-prefix): 6–10 years. Similar lifespan, with the solenoid coil degradation as the secondary failure mode.

Hard water significantly shortens valve life. Mineral deposits accumulate in the inlet screen and within the valve body, restricting flow and stressing the solenoid. Homes with very hard water may see valve failures as early as 4–5 years.

Maintenance Tips to Extend Inlet Valve Life

• Clean the inlet screen annually — turn off water, disconnect the supply line, and flush the screen with water. Replace if corroded.
• If you have hard water, install a sediment filter on the dishwasher supply line — a $15 inline filter that traps particles before they reach the valve
• Do not over-tighten the supply line connection — this damages the valve threads and creates a slow leak that corrodes the valve body over time
• Ensure the water supply shutoff valve under the sink is fully open — a partially closed valve forces the dishwasher inlet valve to work harder

FAQ

How much does it cost to replace a Kenmore Dishwasher Water Inlet Valve?

DIY cost is $15–$70. Professional installation runs $95–$280. The valve is behind the kickplate with straightforward connections — good DIY candidate.

My Kenmore dishwasher is not filling with water — is it the inlet valve?

Check the water supply first: is the shutoff valve open? Is the supply line kinked? Inspect the inlet screen for sediment blockage. If supply is good and the screen is clear, test the valve by listening for a click when the fill phase starts — no click means the control board is not energizing the valve. A click with no water flow confirms the valve is bad.

Can a bad inlet valve cause my Kenmore dishwasher to leak?

Yes — a valve stuck partially open lets water seep into the tub even when the dishwasher is off. This can cause unexplained water accumulation in the tub between uses or overflow if the float switch is also compromised.

How do I test the inlet valve electrically?

Disconnect power, access the valve behind the kickplate, disconnect the wires, and test the solenoid coil with a multimeter. Most dishwasher inlet valve solenoids read 500–1500 ohms. Open circuit means the coil is burned out. Near-zero means a short.

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