What Thermador E17 error means on your dishwasher
Thermador dishwasher error code E17 indicates: Overfill detected — excess water in tub. This is classified as a High-severity issue — schedule service promptly to prevent further damage.
What E17 means
E17 indicates the water level in the tub has exceeded the maximum safe level. The dishwasher will stop filling and attempt to drain the excess water.
Common causes
Inlet valve stuck open (not closing when signaled), faulty water level pressure switch, or control board not sending the close signal to the valve.
Troubleshooting steps
1. Turn off the dishwasher immediately. 2. Close the water supply valve under the sink. 3. Allow the dishwasher to drain (it should do this automatically).
When to call a technician
E17 always requires professional repair — a stuck-open inlet valve can cause flooding. The valve, pressure switch, and control board relay must all be tested.
Error E17 quick reference
- Error code: E17
- Appliance type: Thermador Dishwasher
- Severity: High
- Repair type: Needs technician
- Affected components: Inlet valve, water level sensor, control board
Troubleshooting Thermador E17 step by step
- Power reset: Turn off the appliance at the circuit breaker for 5 minutes, then restore power. If E17 clears and doesn’t return, a transient electrical issue caused it.
- Visual inspection: Check for obvious issues — loose connections, visible damage, water leaks, or unusual sounds from the affected components (Inlet valve, water level sensor, control board).
- Document the error: Note when E17 first appeared, whether it’s constant or intermittent, and any other symptoms (sounds, smells, performance changes).
- Check related systems: Error codes can sometimes be triggered by adjacent systems — verify that water supply, electrical connections, and ventilation are functioning normally.
Professional diagnosis and repair
If E17 persists after a power reset, professional diagnosis is required. Our certified Thermador technicians use factory diagnostic tools to read stored error history, test individual components (Inlet valve, water level sensor, control board), and identify the exact failure point.
Repair typically involves:
- Retrieving and analyzing stored fault codes from the control board
- Component-level testing of the Inlet valve, water level sensor, control board
- Replacing failed components with genuine Thermador OEM parts
- Verifying the repair by running a test cycle and confirming the error clears
Preventing Thermador E17 from recurring
While some component failures are age-related and unavoidable, regular maintenance reduces the likelihood of error E17 recurring:
- Follow the maintenance schedule in your Thermador owner’s manual
- Keep the appliance clean — debris and buildup accelerate component wear
- Address minor issues early — small problems left unrepaired often trigger error codes
- Use a surge protector — power fluctuations can damage electronic control boards
For complete specifications and troubleshooting documentation, visit the Thermador official site. To schedule certified Thermador dishwasher repair, Schedule service online — we service all Thermador models in all 50 states with genuine OEM parts and a 30-day labor warranty.
