Browse 32 Bosch dishwasher error-code guides with exact meanings, display variants, safe first checks, model warnings, and official support references.
Codes covered: E30, E01, E02, E03, E04, E05, E06, E07, E08, E09, E10, E11, E12, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23, E24, E25, E26, E27, E28, E31 / F31, E32, E34, E90.
Bosch can reuse similar displays across product families. The exact dishwasher manual is the deciding source when a code differs by market or production year.
Select the characters exactly as shown. Each guide separates safe user checks from model-specific service work.
Newer Bosch dishwasher manuals use the E:30-00 display when the water-protection system is activated. Bosch's model documentation instructs the user to turn off the water tap and call Customer Service. This page is scoped to that newer E:30-00 display rather than treating it as a duplicate spelling of E15.
Bosch defines dishwasher E01 as a heat-pump motor circuit fault at the main control board. It is not the same as E02: Bosch assigns E02 to a main-control-board relay fault.
Bosch defines dishwasher E02 as a main control board relay fault/error. Unlike E01, Bosch does not identify E02 as the heat-pump motor circuit; the fault domain is the board's relay/control switching.
The E03 display on many Bosch dishwashers indicates that an auxiliary control circuit is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E04 display on many Bosch dishwashers indicates that a heating-related control fault was detected. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E05 display on many Bosch dishwashers indicates that an internal switching fault was detected. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E06 display on many Bosch dishwashers indicates that the door sensor is not reporting correctly. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E07 display on many Bosch dishwashers indicates that the drying fan is not operating correctly. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E08 display on many Bosch dishwashers indicates that the water level is too low for heating. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E09 display on many Bosch dishwashers indicates that the heating element is not operating. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E10 display on many Bosch dishwashers indicates that the heating or drying system may be scaled. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E11 display on many Bosch dishwashers indicates that the temperature sensor is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E12 display on many Bosch dishwashers indicates that the heating system may be restricted by limescale. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E14 display on many Bosch dishwashers indicates that the flow meter signal is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
Bosch's US support defines E15 as the safety switch detecting water in the dishwasher base, which activates the leakage-protection system. The correct user response is to stop the water inflow and contact Bosch support rather than repeatedly resetting or tilting the appliance.
The E16 display on many Bosch dishwashers indicates that uncontrolled water entry was detected. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E17 display on many Bosch dishwashers indicates that the incoming water flow is too high. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E18 display on many Bosch dishwashers indicates that the dishwasher is not receiving enough water. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E19 display on many Bosch dishwashers indicates that an internal valve circuit is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
Bosch dishwasher E20 indicates an internal heater fault in the heat-pump assembly on supported models. Bosch recommends a brief power reset and service if the code returns.
Bosch dishwasher E21 means the heat pump is blocked on supported models. This is distinct from E20, which Bosch defines as an internal heat-pump heater fault.
The E22 display on many Bosch dishwashers indicates that the filter area is blocked. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E23 display on many Bosch dishwashers indicates that the drain-pump circuit is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
Bosch dishwasher E24 is primarily a waste-water drainage-path fault. Bosch documentation points to a kinked or blocked drain hose, a sealed/blocked siphon or air-gap connection, and on some models a loose pump cover as the main user-checkable causes.
Bosch dishwasher E25 specifically indicates that the drain pump is blocked or that the drain-pump cover is loose or missing on supported models. That makes E25 more pump-specific than the broader E24 drain-path condition.
The E26 display on many Bosch dishwashers indicates that the water switch or flow control is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E27 display on many Bosch dishwashers indicates that the incoming voltage is too low. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E28 display on many Bosch dishwashers indicates that the turbidity sensor signal is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
Bosch support lists E31 / F31 for dishwasher model families in some regions. On the supported BSH platform it is a drying-system fault that can leave the machine operating without normal heating or drying. Do not confuse E31 / F31 with E31-00 / E3100, which is a different water-protection code.
The E32 display on many Bosch dishwashers indicates that the water-inlet control needs checking. Codes can vary by model, so match the full model number to the official manual before ordering parts.
The E34 display on many Bosch dishwashers indicates that the water flow-control system is abnormal. Codes can vary by model, so match the full model number to the official manual before ordering parts.
E90 is not included in Bosch's standard US dishwasher error-code list. Do not copy the meaning from a Bosch dryer or another appliance. Record the complete dishwasher E-Nr, confirm the display, and use the model-specific manual or Bosch support.
A letter can resemble a number on a segmented display, and spaces or separators can change the diagnosis. Photograph the display before clearing it, note when it appears, and compare the complete model identifier with official Bosch support.
Troublio groups codes by both brand and device so a meaning from a dryer, dishwasher, washer, or printer is not applied to the wrong product. Every linked guide includes likely causes, checks in order, stop conditions, model warnings, and available official references.