The E415 error on your Bosch Dishwasher means the appliance has detected a fault with water flow or a sensor reading tied to the flow meter circuit. In most cases this is caused by a blocked filter, low water pressure, or a wiring fault, and it can often be fixed at home without calling an engineer.
| Error code | E415 |
|---|---|
| Meaning | Water flow sensor fault or flow meter reading outside expected range |
| Severity | Medium — dishwasher may still run but wash quality and cycle times are affected |
| Time to fix | 15–40 minutes |
| Tools needed | Screwdriver, torch, multimeter (optional) |
What the E415 error means
Bosch dishwashers use a flow meter to measure how much water enters the machine during a fill cycle. When the control board receives a signal that falls outside the expected range — too fast, too slow, or no signal at all — it triggers the E415 code as a safety measure. This stops the wash cycle to prevent overfilling, underfilling, or running with insufficient water pressure.
The fault can be caused by something as simple as a kinked hose or as involved as a failing flow meter component. It's worth checking the basics before assuming a part needs replacing.
Common causes
- Low household water pressure or a partially closed supply valve
- A kinked, twisted, or trapped inlet hose
- Blocked or dirty water inlet filter
- Faulty or dirty flow meter sensor inside the inlet valve assembly
- Loose or corroded wiring connector at the flow meter
- Main control board fault (less common)
How to fix the E415 error
- Check the water supply valve — Make sure the tap feeding the dishwasher is fully open and water pressure at the mains is normal.
- Inspect the inlet hose — Pull the dishwasher out slightly and check the hose isn't kinked, twisted, or trapped against the wall or cabinet.
- Clean the inlet filter — Locate the small mesh filter where the hose connects to the machine (or at the tap end), remove it, and rinse away any debris under running water.
- Power cycle the dishwasher — Turn off at the wall, wait two minutes, and switch back on. This clears minor sensor glitches without needing a full reset.
- Check the flow meter wiring — With the machine unplugged, access the inlet valve area and check the connector to the flow meter is seated firmly and free from corrosion.
- Test with a multimeter or call a technician — If the error persists, the flow meter itself may need testing or replacing, which is best done by a qualified appliance engineer.
If you're comfortable doing basic appliance diagnostics yourself, the same troubleshooting logic used for other Bosch tools can help — for example, checking connections is a common first step whether you're dealing with a Bosch Drill Battery Not Connecting issue or a dishwasher sensor fault. Loose wiring is a frequent culprit across Bosch appliances, similar to problems described in guides on a Bosch Drill Won'T Start: Causes and How to Fix It. If overheating components come into play in other Bosch devices, the troubleshooting steps often mirror those in Bosch Drill Overheating During Use: Causes and How to Fix It.
FAQ
Can I keep using the dishwasher with an E415 error showing?
It's best not to. The machine may not fill correctly, which can lead to poor washing results or damage over repeated cycles.
Will cleaning the filter always fix E415?
Not always, but it resolves the issue in many cases since a blocked filter is one of the most common causes of flow errors.
Do I need a professional to fix this error?
Only if basic checks — water supply, hose, filter, and wiring — don't clear the code. A faulty flow meter or control board typically needs professional replacement.
