Error code reference

Bosch Dishwasher Error Code F4

Water intake fault - less than 80 pulses within 60 seconds or correct number of pulses is not achieved within 255 seconds; programme interrupted.

SourceBosch Dishwasher - Service Manual: DW20 Series (DW20.1-DW20.5, DW20.C)p. 43

Bosch codes Bosch dishwasher codes

Diagnostic procedure

The full F4 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check: Water supply, flow sensor, inlet valve, wiring.

SourceBosch Dishwasher - Service Manual: DW20 Series (DW20.1-DW20.5, DW20.C)p. 43

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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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Where this code is documented

1 manual in the MyPros+ library documents this code for Bosch dishwasher.

Models covered by the manuals that document this code

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The full F4 procedure

Where this code is documented

Models covered by the manuals that document this code

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