ErrorCodeDoctor
Bosch Dishwasher E27 / E9001 error code
The E27 or E9001 error means your Bosch dishwasher detected that the incoming voltage from the household power supply is too low. Flip the breaker off for about thirty seconds, then back on. If the error occurs again contact a licensed electrician to check the incoming voltage to the appliance.
Common causes
- Household power supply voltage is too low to operate the dishwasher correctly
- Brownout or voltage dip in the power grid
- Shared circuit causing voltage drop
How to fix it
-
1
Flip the breaker off for about thirty seconds, then back on
-
2
Turn the breaker back on and check if the error has cleared
-
3
If E27 returns contact a licensed electrician to check the incoming voltage to the appliance
Related Bosch Dishwasher error codes
E01 / E0100
A heat pump motor circuit fault was detected at the main control board
E02 / E03 / E0103 / E0107
A main control board relay fault was detected
E04 / E0105
Faulty heater electronics were detected during self-test
E05 / E0106
A wash arm diverter circuit fault was detected at the main control board
E27 / E9001 error — frequently asked questions
What does the E27 / E9001 error mean on a Bosch dishwasher?
The household power supply voltage is too low
What causes the E27 / E9001 error?
The E27 / E9001 error is usually caused by: Household power supply voltage is too low to operate the dishwasher correctly; Brownout or voltage dip in the power grid; Shared circuit causing voltage drop.
Can I fix the E27 / E9001 error myself?
It's possible for a moderately handy person, but budget 30s and expect some disassembly.
How much does it cost to fix the E27 / E9001 error?
Fixing the E27 / E9001 error on a Bosch dishwasher typically costs $0–$200, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my dishwasher with the E27 / E9001 error?
In most cases yes, but it's best to address the E27 / E9001 error soon — see the fix steps below to resolve it.