Ten Thermador dishwasher codes are decoded here, and one of them is about water chemistry rather than a broken part: E12 reports limescale in the heater loop, which an empty rinse-aid dispenser or depleted softener salt accelerates on models with a built-in softener. E22 is the sump filter blocked and E24 a drain not clearing. E18 is no fill detected. E09 is the flow-through heating element and E04 the heater electronics driving it. E01 is the circulation motor, E02 a control board relay, E06 the door latch sensor, and E15 water in the base.
Heat gets three codes on this platform, and separating them is what saves a control board from being replaced unnecessarily: E09 accuses the element, E04 accuses the triac and board that switch it, and E12 says the element is fine but coated. The guides check the descaling history and the rinse-aid reservoir before either part. E22 and E24 are read together, since a packed filter is the usual reason water is not clearing, and clearing it costs nothing but a few minutes.
E15 is the leak-protection system reporting that it has already caught water, and on a panel-ready built-in the cabinetry hides where that water travels. Further cycles enlarge the problem. The supply hose on these machines carries its own valve at the tap end and is not a generic replacement. Behind the panels sit a heater and a control board at line voltage in a wet enclosure. EasyBear services Thermador dishwashers across Sacramento and the Bay Area.
Thermador Dishwasher Error Code Guides — Quick Reference#
| Error Code | Summary |
|---|---|
| Thermador Dishwasher E01 Error Code: Causes & Fix | E01 on a Thermador Dishwasher means circulation (drive) motor fault. Repair cost $300–$650, likely causes, safe DIY c... |
| Thermador Dishwasher E02 Error Code: Causes & Fix | E02 on a Thermador Dishwasher means control board relay fault. Repair cost $320–$600, likely causes, safe DIY checks,... |
| Thermador Dishwasher E04 Error Code: Causes & Fix | E04 on a Thermador Dishwasher means heater electronics / triac fault. Repair cost $280–$520, likely causes, safe DIY ... |
| Thermador Dishwasher E06 Error Code: Causes & Fix | E06 on a Thermador Dishwasher means door closure / latch sensor fault. Repair cost $150–$340, likely causes, safe DIY... |
| Thermador Dishwasher E09 Error Code: Causes & Fix | E09 on a Thermador Dishwasher means flow-through heating element fault. Repair cost $260–$480, likely causes, safe DI... |
| Thermador Dishwasher E12 Error Code: Causes & Fix | E12 on a Thermador Dishwasher means limescale buildup in the heater loop. Repair cost $20–$90, likely causes, safe DI... |
| Thermador Dishwasher E15 Error Code: Causes & Fix | E15 on a Thermador Dishwasher means water in base / leak-protection triggered. Repair cost $120–$420: likely causes, ... |
| Thermador Dishwasher E18 Error Code: Causes & Fix | E18 on a Thermador Dishwasher means water supply / no fill detected. Repair cost $90–$260, likely causes, safe DIY ch... |
| Thermador Dishwasher E22 Error Code: Causes & Fix | E22 on a Thermador Dishwasher means filter / sump screen blocked. Repair cost $20–$110, likely causes, safe DIY check... |
| Thermador Dishwasher E24 Error Code: Causes & Fix | E24 on a Thermador Dishwasher means drain fault / water not clearing. Repair cost $110–$340, likely causes, safe DIY ... |
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All Thermador Dishwasher Error code guides#
Thermador Dishwasher E01 Error Code: Causes & Fix
E01 on a Thermador Dishwasher means circulation (drive) motor fault. Repair cost $300–$650, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E02 Error Code: Causes & Fix
E02 on a Thermador Dishwasher means control board relay fault. Repair cost $320–$600, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E04 Error Code: Causes & Fix
E04 on a Thermador Dishwasher means heater electronics / triac fault. Repair cost $280–$520, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E06 Error Code: Causes & Fix
E06 on a Thermador Dishwasher means door closure / latch sensor fault. Repair cost $150–$340, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E09 Error Code: Causes & Fix
E09 on a Thermador Dishwasher means flow-through heating element fault. Repair cost $260–$480, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E12 Error Code: Causes & Fix
E12 on a Thermador Dishwasher means limescale buildup in the heater loop. Repair cost $20–$90, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E15 Error Code: Causes & Fix
E15 on a Thermador Dishwasher means water in base / leak-protection triggered. Repair cost $120–$420: likely causes, DIY checks, and when to call a technician.
Thermador Dishwasher E18 Error Code: Causes & Fix
E18 on a Thermador Dishwasher means water supply / no fill detected. Repair cost $90–$260, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E22 Error Code: Causes & Fix
E22 on a Thermador Dishwasher means filter / sump screen blocked. Repair cost $20–$110, likely causes, safe DIY checks, and when to call a technician.
Thermador Dishwasher E24 Error Code: Causes & Fix
E24 on a Thermador Dishwasher means drain fault / water not clearing. Repair cost $110–$340, likely causes, safe DIY checks, and when to call a technician.
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