Bosch
All Bosch Dishwasher Error Codes
Every known Bosch dishwasher error code with plain-English explanations, difficulty ratings, and step-by-step DIY fix guides.
26 error codes
E01
The main control board has detected an internal fault.
Professional Repair
30–60 minutes
E09
The water heating element is not working.
Professional Repair
60–120 minutes
E12
Limescale deposits have accumulated on the heating element, reducing its efficiency and triggering a descaling alert.
Easy Fix
30–60 minutes
E14
The dishwasher's flow meter is not detecting water entering the machine, even though the supply may be active.
Moderate Repair
30–60 minutes
E15
The leak protection system detected water in the base of the dishwasher.
Moderate Fix
20–45 minutes
E18
The dishwasher is not receiving enough water.
Easy Fix
10–20 minutes
E22
The drain filter is significantly clogged with debris.
Easy Fix
5–15 minutes
E24
The dishwasher cannot drain water properly.
Moderate Fix
15–30 minutes
E25
The drain pump is physically blocked or jammed.
Moderate Fix
20–40 minutes
E02
The heater relay on the control board has malfunctioned.
Professional Repair
45–90 minutes
E03
The auxiliary heater relay on the main control board has failed.
Professional Repair
45–90 minutes
E04
The water flow sensor has detected an abnormal flow rate.
Moderate — DIY Possible
30–60 minutes
E05
The water switch Triac on the control board or the float switch has failed.
Moderate — DIY Possible
30–60 minutes
E06
The door switch or Aqua Sensor has malfunctioned.
Moderate — DIY Possible
30–60 minutes
E07
The drying fan is not operating correctly.
Moderate — DIY Possible
30–60 minutes
E08
Insufficient water is reaching the circulation pump.
Moderate — DIY Possible
20–45 minutes
E10
The dishwasher's heating circuit is not functioning correctly.
Professional Repair
45–90 minutes
E11
The NTC temperature sensor is not responding or reading incorrect values.
Moderate — DIY Possible
20–40 minutes
E13
The incoming water temperature exceeds the safe limit.
Easy DIY Fix
10–20 minutes
E16
The dishwasher is filling with water uncontrollably.
Urgent — Stop Using
30–60 minutes
E17
The water level inside the dishwasher is higher than expected.
Moderate — DIY Possible
20–45 minutes
E19
The heat exchanger system is not functioning correctly.
Professional Repair
45–90 minutes
E20
The heat pump system is not operating correctly.
Professional Repair
60–120 minutes
E21
The circulation pump is jammed or not running at the correct speed.
Moderate — DIY Possible
30–60 minutes
E23
The drain pump has an electrical problem.
Professional Repair
30–60 minutes
E27
The dishwasher has detected a voltage supply that is too low.
Easy DIY Fix
10–30 minutes