Domestic Appliance Forum

Bosch Dishwasher Error Codes
Error Codes for Bosch SMS/SH Series and Exxcel/Logixx Dishwashers:

Fault Codes E01, E02, E03, E04, E05
Cause: The E01, E02, E03, E04, E05 faults codes mean that the dishwasher has suffered a power module failure. The programming of replacement power modules has been locked down by Bosch so in the event of an error code of this type it’s recommended that you contact a Bosch approved dishwasher engineer.

Fault Code E06
Cause: Door mechanism problem.
Action: The sensor/switch that detects whether the door is locked before starting a cycle is damaged or faulty. Check for obstructions and replace part if necessary.

Fault Code E07
Cause: Dishes not drying due to faulty fan.

Fault Code E08
Cause: Water is not filling above level of heating element.
Action: Most likely a problem with the heating element, or filling issue.

Fault Code E09
Cause: Water heating problem. Most likely related to heating element.

Fault Code E10
Cause: Heating element problem.
Action: Check for blockages/build-up/limescale that could be stopping water from interacting with the element properly.

Fault Code E11
Cause: Thermostat or temperature sensor faulty.
Action: Replace faulty part if necessary.

Fault Code E13
Symptom: Water temperature exceeding 75C
Action: Have you connected your dishwasher to a hot water supply? If so switch to cold.

Fault Code E14
Cause: Reed switch flow sensor fault
Action: Check contacts on the reed switch connection are clean.

Fault Code E15
Symptom: Water leaking through to dishwasher base.
Action: Empty the base of water. If error occurs again then your dishwasher has a leak.

Fault Code E16
Cause: Water inlet valve fault.
Action: Check inlet valve and water supply.

Fault Code E17
Symptom: Water level too high (overfill).
Cause: Possible flow sensor fault, or drainage problem.

Fault Code E18
Symptom: Water level too low (underfill).
Cause: Can be due to a problematic water valve.

Fault Code E20
Symptom: Electrical short or break.
Cause: Short or break causing incorrect resistance in winding of the circulation pump or the motor.

Fault Code E21
Symptom: Circulating pump blocked.
Cause: A blockage between the motor or the pump resulting in insufficient water flow.

Fault Code E23
Cause: As error code E20, but this time the electrical problem is with the drain pump.
Action: Replace drain pump if necessary.

Fault Code E24
Symptom: Dishwasher not draining properly.
Cause: Drain filters blocked.
Action: Clean the filters.

Fault Code E25
Symptom: Dishwasher not draining properly.
Cause: Possibly blocked filters, as above. Otherwise this fault code could indicate a blocked drain pump.

Fault Code E26
Cause: Water switch/regulator problem.
Action: Check water switch and replace if required.

Fault Code E28
Cause: Fault detected with turbidity sensor.
Symptom: Dishes not getting clean. Dirty water in the tub.

If your Bosch dishwasher displays fault codes in a different format than E00 (such as on models with a full LCD display) then you might be shown the following fault codes instead.

Fault code A or B
Cause: Fault with the water sensor.
Action: Inspect dishwasher for evidence of leaks. Ascertain whether anti-flood protection has been activated.

Fault Code C
Cause: Motor tacho fault.
Action: Check motor and motor tacho wiring for problems.

Fault Code D
Cause: Wiring/electrical fault related to motor triac.
Action: Check wiring on/to PCB and motor. Check the triac (on the PCB).

Fault Code E
Cause: Diverter valve fault. The diverter valve is used to send water to only the top or bottom rack when the half load option has been selected.
Action: Inspect diverter valve and its wiring for problems.

Fault Code F
Cause: Fill timeout. The required water level is not sufficient within six minutes of the start of the programme.

Fault Code G
Cause: Diverter triac fault.
Action: Check diverter triac (on PCB) and its wiring.

Fault Code H
Symptom: Dishwasher not heating.
Cause: Possible problem with heating element or thermostat, or wiring issue.

Fault Code K
Cause: Faulty thermostat sensor (NTC).
Action: Inspect the NTC and thermostat, and their wiring.

Fault Code 0
Cause: Pressure sensor fault.
Action: Check the pressure sensor and its wiring.