Error code reference

Bosch Dishwasher Error Code E3

Filling error

Bosch codesBosch dishwasher codes

Filling error — dishwasher is unable to fill with water properly.

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What E3 means on a Bosch dishwasher

The E3 error code on a Bosch dishwasher indicates a filling error, meaning the control board detected that the tub did not reach the required water level within the expected time window. The water inlet system is the primary area of concern, which includes the water inlet valve, the water supply line, the door latch switch, and the pressure switch or flow meter that signals the control board when adequate water has entered the tub. E3 triggers when the dishwasher begins a fill cycle and the pressure switch or flow meter fails to confirm sufficient water intake before a timeout occurs.

For homeowners, this error basically means your dishwasher started trying to fill with water but could not get enough water inside to run a wash cycle safely. This could be as simple as a closed supply valve under the sink or a kinked inlet hose, but it can also point to a failed water inlet valve that has stopped opening properly. The dishwasher stops the cycle to prevent running the pump dry or operating without enough water to clean dishes effectively.

Bosch dishwashers use either a pressure switch or a flow meter depending on the model series to monitor water intake. If either of these sensors fails or gives an incorrect reading, the control board may trigger E3 even when water is physically entering the tub. Identifying whether the problem is mechanical, related to water supply, or sensor-based determines the repair path.

Source: manufacturer service documentation.

Common causes of E3

  1. 01

    Closed or restricted water supply valve

    Wiring / connection

    The shutoff valve under the sink supplying the dishwasher may be fully or partially closed, reducing water flow below the minimum threshold needed to satisfy the fill cycle. This is the first physical check to perform before inspecting any internal components.

  2. 02

    Faulty or clogged water inlet valve

    Part replacement

    The water inlet valve controls water entry into the dishwasher tub and can fail mechanically or develop mineral scale buildup that restricts flow. A valve that opens slowly or partially will prevent the dishwasher from filling within the allotted time, triggering E3.

  3. 03

    Kinked or blocked inlet hose

    Wiring / connection

    The water supply hose running from the shutoff valve to the dishwasher inlet can develop a kink, especially after the appliance has been moved or reinstalled. A blockage or tight bend in the hose restricts flow and causes the same fill timeout condition that triggers E3.

  4. 04

    Failed flow meter or pressure switch

    Part replacement

    Bosch dishwashers use a flow meter or pressure switch to report water level to the control board. If this sensor fails or sends an incorrect signal, the board will register a fill error and display E3 even if water is entering the tub normally. Replacing the faulty sensor resolves this.

See the test procedure for each cause

Frequently asked questions about E3

What does E3 mean on a Bosch dishwasher?
E3 on a Bosch dishwasher is a filling error code. It means the control board started a fill cycle but did not receive confirmation from the flow meter or pressure switch that the tub reached the required water level within the expected time. The dishwasher stops the cycle to prevent running with insufficient water.
How do I fix E3 on a Bosch dishwasher?
Start by checking the water supply valve under the sink to confirm it is fully open. Then inspect the inlet hose for kinks or obstructions. If the supply side looks normal, the next step is testing the water inlet valve for continuity and checking whether it opens fully when energized. If the valve and supply are working correctly, the flow meter or pressure switch may need to be replaced.
Can I still use my Bosch dishwasher when E3 is showing?
No, the dishwasher will not complete a wash cycle with E3 active because it stops filling and halts operation to prevent running the wash pump without adequate water. Attempting to restart the cycle repeatedly without resolving the fill issue will not bypass the error and risks pump damage if any water does enter but falls short of safe operating levels.
How much does it cost to repair a Bosch dishwasher E3 error?
If the cause is a closed supply valve or kinked hose, there is no parts cost. A replacement water inlet valve for a Bosch dishwasher typically costs between $25 and $75 for the part, and a flow meter or pressure switch runs $20 to $60. Professional labor for a dishwasher water inlet repair generally adds $100 to $200 depending on your area. Homeowners comfortable with appliance repair can replace the inlet valve or flow meter themselves using basic tools.
Will resetting my Bosch dishwasher clear the E3 error?
A reset, typically performed by pressing and holding the Start button for 3 to 5 seconds or cutting power to the unit, will clear the active error and allow the dishwasher to attempt a new fill cycle. However, E3 will return immediately if the underlying cause has not been fixed. A reset is useful for confirming whether the error is intermittent or consistent, but it does not repair the fill system.

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