Bosch Dishwasher Error Code E16 — Uncontrolled Water Fill
What this means
The E16 error indicates that water is entering the dishwasher without being commanded by the control board. This is a safety alert. The water inlet valve may be stuck open or leaking internally, allowing water to flow continuously into the tub. The float switch may have triggered to prevent overflow.
Step-by-step fix
3 stepsTurn off the water supply immediately
Shut off the water supply valve under the sink to stop water from flowing into the dishwasher.
This is an urgent step — uncontrolled filling can cause flooding.
Check the water inlet valve
Unplug the dishwasher and inspect the water inlet valve. If it is stuck in the open position or shows signs of mineral buildup, it needs replacement.
A valve that allows water to drip through even when unpowered has an internal seal failure.
Inspect the float switch
Make sure the float switch moves freely. If it is stuck in the down position, it cannot detect overflow and shut off the valve.
Clean around the float assembly to remove any debris preventing free movement.
When to call a professional
Water inlet valve replacement is recommended as a professional repair to prevent flooding risks.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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