Step-by-Step DIY Fix Guide
- SAFETY: Disconnect power and shut off the water supply valve under the sink.
- Reset power for 30 seconds, then restore with the water supply valve open.
- Run a short cycle and watch for any sign of water continuing to fill after the tub is full.
- If overfilling occurs, the inlet valve or pressure switch requires replacement.
If it's still not filling correctly
- If normal household water flow looks good but the code returns, the inlet-valve or fill-sensing path becomes more likely.
- If airflow still seems weak after the basic checks, the fan path or a deeper obstruction becomes more likely.
- If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.
What This Error Means
Error code E16 on your Gaggenau dishwasher indicates: There is an issue with water flowing into the dishwasher or the filling system. The water may not be able to enter the dishwasher. The appliance detects this condition through its built-in sensors and halts the current cycle to prevent further damage. Depending on the model, the code may flash on the display panel, appear on a digital readout, or cause the status lights to blink in a specific sequence. The dishwasher will not resume normal operation until the underlying fault is resolved.
The most frequent cause of error E16 is faulty water inlet valve that doesn't close fully, causing overfill. When this happens, the dishwasher's control board detects the abnormal sensor reading or motor response and triggers the fault code as a protective measure. Other contributing factors are listed in the causes section below — working through them in order is the fastest path to a fix.
Many cases of error E16 can be resolved with DIY troubleshooting — start with the steps below before calling a technician. If the steps do not clear the code, the fault is deeper in the system and professional diagnosis will be needed. The guide specifies clearly at which point to stop DIY work.
The most visible symptom of E16 is water where it shouldn't be — either too much inside the tub, or water detected in the base tray beneath the dishwasher. Turn off the water supply valve under the sink before investigating, and lay towels around the base of the unit while troubleshooting.
Most Likely Cause by Symptom
The Gaggenau dishwasher may stop, pause, or refuse to complete the cycle normally.
Likely cause: Faulty water inlet valve that doesn't close fully, causing overfill
Check first: SAFETY: Disconnect power and shut off the water supply valve under the sink.
The warning may return immediately because the appliance is detecting an internal fault.
Likely cause: Malfunctioning water level sensor (pressure switch)
Check first: Reset power for 30 seconds, then restore with the water supply valve open.
Common Causes
- Faulty water inlet valve that doesn't close fully, causing overfill
- Malfunctioning water level sensor (pressure switch)
- Control board failing to stop the fill cycle
- Float switch stuck in the 'empty' position
What Not to Do
- Do not run another cycle if overfilling is observed — flood risk
- Do not leave the water supply on while diagnosing
Model and Display Variation Notes
Model-family notes
- Gaggenau dishwasher display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
Display and panel differences
- Panel wording can vary by series, so confirm the exact code pattern before buying parts.
Parts, Tools and Service Options
Common parts
- Water inlet valve ($25–$60)
- Water level pressure switch ($20–$45)
Manual and model check
Check your exact model and manual before ordering any Gaggenau dishwasher parts.
Service option
Gaggenau service visit if the warning returns after the basic checks are complete.
Suggestions in this section are organized to support the troubleshooting flow first. Any future affiliate relationships should be disclosed clearly.
When Not to Keep Troubleshooting
Dishwasher overfills during a test cycle — shut water off immediately and call a technician
How to Prevent It Recurring
- Install a water leak detector tray under the dishwasher to catch overfill events early
Related Error Codes
E17
Water Fill Overfill (Variant — Same as E16)
E15
The safety switch has detected water in the base of the dishwasher. Your leakage protection system has been activated.
E18
There is an issue with water flow into the dishwasher. The water level is too low, or water is not being pumped correctly.
E3300
There is an issue with water flowing into the dishwasher or the filling system. The water may not be able to enter the dishwasher.
Extra notes
- This page is based on Gaggenau support material and stays conservative where model-specific guidance may vary.
- The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.
Source and model notes
Last reviewed: 2026-04-09
Based on: Based on Gaggenau support material and edited into consumer-safe guidance for the exact code family on this page.
Model coverage note: Gaggenau dishwasher code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.
Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.
Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.