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Error code reference

Bosch Dishwasher Error Code F2

Overfilling

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What the F2 error code actually means

Your Bosch dishwasher detected too much water inside and stopped the cycle to prevent a flood. The machine tried to drain the extra water, but if it could not do so within about a minute, it shut down the programme. This is usually caused by a clogged drain, a valve that is not closing properly, or a faulty water level sensor.

Diagnostic procedure

The full F2 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check: Drain pump (blockage in hoses), flow sensor, inlet valve, leakage, wiring.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of F2

Ranked by how often they cause this code
  1. 1Blocked drain pump or hose
  2. 2Faulty or stuck-open inlet valve
  3. 3Defective pressure sensor
  4. 4Faulty or stuck float switch
  5. 5Wiring fault or loose connector

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Questions people ask about F2

What does F2 mean on a Bosch dishwasher?
F2 on a Bosch dishwasher signals an overfill fault, meaning the machine detected more water in the tub than expected based on readings from the pressure sensor or float switch. When this occurs, the control board activates the drain pump to remove the excess water. If the water is not drained within 60 seconds, the programme is interrupted. The fault can be caused by a blocked drain, a faulty inlet valve, a defective sensor, or a wiring issue.
Is it safe to use my Bosch dishwasher when the F2 code is showing?
You should not continue using the dishwasher until the F2 fault is resolved. An overfill condition can lead to water leaking onto your floor or into the base tray, which can cause water damage to cabinetry and flooring. Running the machine while the fault is active also risks further damage to the drain pump or other internal components.
How much does it cost to repair a Bosch dishwasher F2 error?
Repair costs vary depending on the cause. Clearing a drain blockage yourself costs nothing beyond your time, while a service call for diagnosis typically runs in the range of $75 to $150. Replacing an inlet valve or pressure sensor, including parts and labor, generally falls in the range of $150 to $350. More complex issues involving the control board or multiple failed components can push costs higher.
Can I fix the F2 error on my Bosch dishwasher myself?
Some causes of the F2 error are DIY-friendly, particularly clearing blockages from the drain pump filter, checking the drain hose for kinks, and inspecting wiring connectors for visible damage. However, replacing components such as the inlet valve, pressure sensor, or float switch requires basic appliance repair skills and comfort working with electrical components and water connections. If you are not confident with those tasks, a qualified technician is recommended.
Will resetting the dishwasher clear the F2 error code?
A reset may temporarily clear the F2 code from the display, but if the underlying cause has not been corrected, the error will return once the dishwasher runs another cycle and the fault condition reoccurs. To permanently resolve the code, the root cause such as a blocked drain, faulty valve, or defective sensor must be diagnosed and repaired. Use a reset only as a way to confirm whether a repair was successful.

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