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Bosch Dishwasher E22 Error Code – Meaning, Causes & Fix

BoschDishwasherUpdated 2026-05-22

Bosch dishwasher error code E22 is a water supply fault that appears when the dishwasher's water inlet valve does not open, is stuck, or the incoming water pressure is below the minimum required threshold. The inlet valve is the electronically controlled solenoid that opens to allow water into the dishwasher at the start of the cycle. When this valve fails to open, becomes stuck closed, or insufficient water pressure prevents it from operating, the dishwasher cannot fill with water and the cycle cannot begin. Bosch will display error E22 and stop the cycle immediately. In most cases, the fault is a simple clog in the inlet valve screen or a closed shut-off valve, but recurring E22 errors indicate a failed inlet valve that requires replacement.

Quick Answer

What it means

Water inlet valve has not opened or is stuck. The dishwasher cannot fill with water to begin the wash cycle.

Severity

Moderate

Can you fix it yourself?

Yes — checking water supply, inlet valve screen cleaning, and shut-off valve are safe DIY steps.

Call a technician when

If error E22 persists after checking the water supply and cleaning the inlet valve screen.

What Does E22 Mean?

A Bosch dishwasher requires an adequate water supply (typically 20–80 PSI) at the inlet hose connection for proper operation. When a cycle starts, the water inlet solenoid valve opens to fill the wash chamber. The valve is controlled by the dishwasher's control board, which expects the valve to open within a specific time frame.

Error code E22 is logged when one of these conditions occurs:

1. Valve stuck or failed: The solenoid valve receives the signal to open but does not respond. The coil may be burnt out, or internal seals may be stuck. 2. Insufficient water pressure: The incoming pressure is below the minimum threshold (typically 20 PSI for Bosch). The valve may open partially but not enough to fill the chamber within the expected time. 3. Inlet valve screen clogged: A small mesh screen inside the inlet valve becomes clogged with mineral deposits or debris, restricting water flow. 4. No water supply: The shut-off valve at the wall is closed or the inlet hose is kinked or blocked.

Bosch dishwashers will attempt to start the fill cycle, detect the lack of water flow, and display E22 after a timeout period (typically 30–60 seconds).

What Causes This Error?

  • Mineral deposits or sediment clogging the inlet valve screen
  • Water inlet valve solenoid coil burnt out or failed
  • Shut-off valve at the wall turned off or partially closed
  • Inlet hose kinked, pinched, or blocked
  • Low water pressure from the household supply (below 20 PSI)
  • Inlet hose connector loose at the dishwasher or wall connection
  • Control board failure preventing the inlet valve signal from being sent
  • Frozen inlet hose (in cold climates or if water line is in an unheated area)

How to Fix E22

  1. 1

    Check the water shut-off valve first. Locate the shut-off valve where the inlet hose connects to the water supply under the sink (usually a small knob or lever). Ensure it is fully open — the handle should be parallel to the hose. If it is closed, turn it counterclockwise until fully open. Run a test cycle on the dishwasher to see if E22 clears.

  2. 2

    Inspect the inlet hose for kinks, pinches, or blockages. Trace the water inlet hose from the shut-off valve under the sink to the back of the dishwasher. Look for any kinks, sharp bends, or sections where the hose is pinched against the cabinet or frame. Straighten any kinks carefully. If the hose feels hard or frozen in cold climates, apply warm (not hot) water to thaw it. Do not use boiling water, as extreme temperature can damage the hose.

  3. 3

    Clean or replace the inlet valve screen. Turn off the water shut-off valve. Disconnect the inlet hose from the dishwasher by unscrewing the connector nut. A small stainless steel screen should be visible inside the hose connection. Remove the screen carefully using tweezers or needle-nose pliers. Inspect it for mineral buildup or debris. Rinse the screen under warm running water or soak it in white vinegar for 15 minutes to dissolve mineral deposits. Reinsert the screen and reconnect the hose.

  4. 4

    Check the inlet hose connection at the dishwasher. Open the dishwasher door and locate where the inlet hose connects to the back of the unit (usually a plastic connector fitting). Ensure the connection is hand-tight. Use a wrench if necessary to tighten it slightly, being careful not to over-torque and crack the fitting. A loose connection can cause water to leak or prevent adequate fill.

  5. 5

    Test water pressure if E22 persists. Connect a pressure gauge to the water supply line (available at most hardware stores). With the shut-off valve fully open, check the incoming pressure. Bosch requires a minimum of 20 PSI. If pressure is below 20 PSI, contact your water utility or a plumber to check the household supply. If pressure is adequate, the inlet valve itself has likely failed.

  6. 6

    Perform a test cycle after remedial steps. After cleaning the inlet valve screen, straightening the hose, and tightening connections, run a short test cycle to confirm E22 does not return. If the error persists on the next cycle, the inlet valve solenoid has likely failed and requires replacement by a Bosch service technician.

When to Call a Professional

Bosch dishwasher inlet valve replacement requires removing the unit from the cabinet and accessing the valve assembly, which is a multi-step process best left to a certified Bosch service technician. Replacement valves cost $50–$150, and labor typically adds $100–$200. Contact Bosch support at bosch-home.com or call 1-800-944-2904 to schedule a service appointment. Bosch provides 1-year parts and labor warranty on most models.

Can You Still Use the Device?

The dishwasher cannot operate while error E22 is displayed. Do not attempt to start a wash cycle when the error is active, as the cycle will stall mid-wash with water unable to fill. Address the error before resuming normal use.

Official Resources

Disclaimer: This article is for informational purposes only and does not constitute professional repair advice. CodeExplain is not affiliated with Bosch or any other brand mentioned. Always consult a qualified technician for complex repairs.