Thermador Dishwasher E14 Error: Flow Meter Failure
Thermador dishwasher E14 error indicates flow meter failure. Review the diagnostic steps below before calling a technician for help. What Does Thermador Dishwasher Error Code E14 Mean? The E14 error code on a Thermador Sapphire, Star-Sapphire, or Emerald dishwasher indicates the flow meter — the sensor that measures how much water enters the dishwasher — […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. If cycles occasionally complete without E14, limited use is possible while you schedule service. However, unpredictable water fill volumes mean cleaning results will be unreliable. Schedule service within a week.
Can I reset the code?
Yes. A breaker reset can clear E14 if the flow meter turbine had a momentary stall. If the sensor has electrically failed, E14 returns on the next fill cycle.
When to stop immediately?
Stop if you notice: E14 appears on every cycle after reset, Dishwasher fills with far more water than normal.
Symptoms You May Notice
Cycle stops partway through during the fill phase
The dishwasher begins filling with water but halts mid-program before reaching the correct water level.
Water level inside the tub seems inconsistent between cycles
Sometimes the tub has noticeably more or less water than normal when checked early in a cycle.
E14 appears intermittently — some cycles complete, others do not
The error does not appear on every run, suggesting the flow meter is failing rather than completely dead.
Possible Causes
Debris lodged in the flow meter turbine
A small particle from the water supply or from inside the appliance has lodged in the turbine wheel of the flow meter, causing erratic readings.
Requires ProfessionalFailed flow meter sensor
The Hall-effect sensor inside the flow meter that detects turbine rotation has failed electrically.
Requires ProfessionalDisconnected flow meter wiring
The wiring harness between the flow meter and the control board has come loose at a connector.
Requires ProfessionalSafe Checks You Can Do
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1
Reset the dishwasher
Turn off the circuit breaker for 60 seconds, restore power, and restart a cycle. Thermador Sapphire and Star-Sapphire flow meters can occasionally stick after a water pressure fluctuation.
A single successful cycle after reset does not mean the flow meter is repaired. Monitor the next several cycles to see if E14 returns.
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2
Verify the water supply valve and pressure
Check that the water supply valve under the sink is fully open. Low water pressure can cause the flow meter turbine to spin too slowly and generate a fault.
Thermador dishwashers need at least 20 PSI water pressure. If your home pressure is low, a pressure test at the supply may be needed.
When to Call a Professional
Contact a qualified technician if:
- Flow meter turbine does not spin when water pressure is confirmed adequate
- Hall-effect sensor shows no signal output
- E14 appears alongside E18 or water supply faults
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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