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Error code reference

Bosch Dishwasher Error Code E:22

Sanitized LED is lit; caused by inlet water flow rate too high.

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What the E:22 error code actually means

Your Bosch dishwasher is detecting that water is filling into the machine too quickly, faster than it should be. This is usually caused by a small part inside the water inlet valve that is supposed to slow the water flow but is not doing its job. The dishwasher cannot complete a proper sanitizing cycle under these conditions, so it stops and displays this error.

Diagnostic procedure

The full E:22 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Heat pump measures water flow. Check water flow limiter in water inlet valve. If water valve is faulty, replace it.
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Most common causes of E:22

Ranked by how often they cause this code
  1. 1Faulty or damaged water flow limiter
  2. 2Defective water inlet valve
  3. 3Excessive household water supply pressure
  4. 4Debris or sediment in the inlet valve

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Questions people ask about E:22

What does E:22 mean on a Bosch dishwasher?
E:22 on a Bosch dishwasher indicates that the heat pump has detected an inlet water flow rate that is too high. It is signaled by the Sanitized LED lighting up. The most common cause is a faulty water flow limiter inside the water inlet valve. The inlet valve may need to be inspected or replaced to resolve the error.
Will resetting my Bosch dishwasher clear the E:22 error?
A reset may temporarily clear the E:22 error from the display, but if the underlying cause, such as a faulty flow limiter or inlet valve, is not corrected, the error will return during the next wash cycle. A reset alone is not a repair and should only be used as a diagnostic step.
How much does it cost to repair a Bosch dishwasher E:22 error?
If the repair requires replacing the water inlet valve assembly, parts and labor costs typically range from around $100 to $250 depending on the specific model and local labor rates. If the issue is traced to high household water pressure and no parts are needed, costs may be limited to a service call fee or a pressure regulator installation.
How do I fix the E:22 error on my Bosch dishwasher?
Start by locating the water inlet valve and inspecting the flow limiter built into it for damage or blockage. If the limiter is compromised or the valve is allowing excessive water flow, replace the inlet valve assembly. If your household water pressure is abnormally high, addressing that at the supply line may also help resolve the issue.
Is it safe to run my Bosch dishwasher with an E:22 error?
Running the dishwasher while the E:22 error is active is not recommended. Excessive water flow can interfere with proper cycle operation and may prevent the unit from completing a sanitizing cycle correctly. Continued use without resolving the fault could also put additional stress on the inlet valve and related components.

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