Bosch Dishwasher Error Code E19 — What It Means
The E19 error on Bosch dishwashers is a warning that the appliance has detected an abnormal condition related to water management or leak detection. Depending on the model and control software version, E19 commonly points to a triggered leak/overflow detection (base pan/float switch), a drainage or circulation fault that has caused water to collect where it shouldn’t, or, less often, an associated electrical or heater/thermostat fault that affects water handling. When E19 occurs you may notice the dishwasher stopping mid-cycle, water pooled in the bottom of the unit or the base pan, longer or failed drying cycles, unusual noises, or the dishwasher refusing to start until the fault is cleared. If left unattended, E19 can increase the risk of water damage to cabinetry and flooring and create an electrical hazard if water reaches control components.
Common Causes
- Activated base pan float or leak detection sensor (water in the base tray)
- Clogged or restricted drain pump, filter, or drain hose causing water backup
- Faulty drain pump or circulation pump not removing water properly
- Loose, cracked, or disconnected drain or inlet hoses allowing leaks
- Worn door gasket or loose door latch allowing water to escape during cycles
- Faulty water inlet valve or excessive incoming water pressure
- Failed control board or sensor communication error (rare, model-dependent)
- Blocked sump area with debris or broken glass preventing proper drainage
Troubleshooting Steps
- Power and water safety: Turn off and unplug the dishwasher, and shut off the water supply before inspecting. This prevents electrical shock and further water flow.
- Check for visible water: Gently pull the dishwasher out and look under the unit for water in the base pan. If you find water, carefully soak it up with towels; a wet/dry vacuum helps.
- Inspect the base pan float: Locate the small float or sensor in the base pan area and make sure it moves freely. Clean any debris that may pin it down. If the float is stuck in the up position, that can trigger E19.
- Examine hoses and clamps: Inspect the drain hose, inlet hose, and any visible connections for cracks, holes, loose clamps, or kinks. Tighten or replace damaged hoses.
- Clean filters and sump: Remove and clean the filter assembly and check the sump for debris, glass, or food particles that can block drainage or damage the pump.
- Check the drain pump: With the unit powered off, access the drain pump area and ensure the impeller isn’t jammed. If the pump is noisy or not spinning freely, it may need replacement.
- Test drain path: Run a short rinse with the sink disposal cleared and watch whether water drains properly. Also check that the air gap or high-