Bosch error codes

Independent plain-English guides for Bosch appliance codes. Use official support for model-specific instructions and safety notices.

Bosch Dishwasher

E01

Reset power at the breaker once; repeated E01 needs Bosch support or service.

Heating or temperature fault

Bosch Dishwasher

E02

Reset power once and stop if E02 returns, because board faults are service-level.

Electronic communication fault

Bosch Dishwasher

E03

Power reset once; repeated E03 should go to service rather than repeated cycles.

Electronic communication fault

Bosch Dishwasher

E04

Do not keep running heated cycles; contact support if E04 remains.

Heating or temperature fault

Bosch Dishwasher

E05

Check for obvious rack or spray blockage, then stop if E05 returns.

WaterWall or spray system fault

Bosch Dishwasher

E06

Check that the door closes normally and request service if E06 repeats.

Door or lid lock

Bosch Dishwasher

E07

Reset power once; repeated E07 is not a homeowner repair step.

Motor or drive fault

Bosch Dishwasher

E09

Reset once; if it returns, stop repeating heated cycles and arrange service.

Heating or temperature fault

Bosch Dishwasher

E10

Avoid repeated heat-dry tests and contact support if E10 returns.

Heating or temperature fault

Bosch Dishwasher

E12

Use the model-approved descaling path and check water-softener salt guidance if equipped.

Heating or temperature fault

Bosch Dishwasher

E14

Check water supply first; service is likely if supply is normal.

Water fill problem

Bosch Dishwasher

E15

Turn off water if leaking is active and check for visible leaks before resetting.

Leak or overflow detection

Bosch Dishwasher

E16

Check the inlet hose for kinks or damage and confirm the supply is on.

Water fill problem

Bosch Dishwasher

E17

Check inlet hose condition and stop if the filling code returns after supply is normal.

Water fill problem

Bosch Dishwasher

E18

Open the supply valve fully and inspect the inlet hose.

Water fill problem

Bosch Dishwasher

E19

Power reset once; repeated E19 should be handled by service.

Sensor reading fault

Bosch Dishwasher

E20

Do not force repeated cycles if the pump hums or the code returns immediately.

Motor or drive fault

Bosch Dishwasher

E21

Reset power once and contact support if E21 returns.

Motor or drive fault

Bosch Dishwasher

E22

Clean and reseat the dishwasher filter, then run a short rinse cycle.

Filter or screen condition

Bosch Dishwasher

E23

Check simple drain restrictions first; repeated E23 usually needs service.

Drain problem

Bosch Dishwasher

E24

Check the filter, drain hose, sink air gap, and disposal connection.

Drain problem

Bosch Dishwasher

E25

Clean the filter and inspect the pump cover only as the manual allows.

Drain problem

Bosch Dishwasher

E27

Avoid repeated starts and have the outlet or circuit checked if it repeats.

Voltage condition