Bosch Dishwasher — Error Code E03
The auxiliary heater relay is faulty.
No ranked repair is shipped yet for this code; ApplianceDB files the control board under the heating cause category. Severity is classified as degraded — the appliance keeps running but not correctly.
Ranked repair steps
No user remedy is shipped for this code yet — consult the repair reference linked below or the manufacturer's service line.
Provenance: facts re-derived from a disclosed repair reference — ApplianceCodeHub — Bosch Dishwasher Error Codes. Meanings and steps are original paraphrase; nothing is reproduced verbatim.