E03

For E03, brand is Bosch; appliance type is Dishwasher; meaning is There is a main control board relay fault/error, verified against its source on 2026-08-04.

Brand: Bosch
Appliance type: Dishwasher
Error code: E03
Meaning: There is a main control board relay fault/error.

Sourcebosch-home.com

Verified2026-08-04

Review by2027-08-04

DatasetAppliance fault and error codes

What the source says

See more Error Code E03 There is a main control board relay fault/error. Reset power to breaker for 30 seconds. If not resolved, call Bosch Customer Support at 1-800-944-2904 for assistance. See more Error Code E04 Your dishwasher has detected faulty (heater) electronics in the self-test.

— bosch-home.com, retrieved 2026-08-04

Source

bosch-home.comhttps://www.bosch-home.com/us/owner-support/dishwashers/error-codes

Last verified against source: 2026-08-04. Scheduled for re-check by: 2027-08-04. This page as Markdown · OKF concept · full dataset as JSON.