The E425 error on your Bosch Dishwasher means the appliance has detected a fault with the water flow or aquastop system that controls water intake. This often relates to a flow meter or inlet valve reading outside expected parameters. In most cases you can clear the fault yourself before deciding whether a technician visit is needed.
| Error code | E425 |
|---|---|
| Meaning | Fault detected in the water inlet flow sensor or aquastop protection circuit |
| Severity | Medium — the dishwasher may still run cycles but water intake could be inconsistent or blocked entirely |
| Time to fix | 15–40 minutes |
| Tools needed | Adjustable pliers, small bucket or towel, torch |
What the E425 error means
Bosch dishwashers use a flow meter to measure how much water enters the machine during a cycle. The E425 code appears when the control board receives an unexpected or missing signal from this sensor, or when the aquastop safety valve trips due to a suspected leak. It's the machine's way of protecting itself from overfilling or running with insufficient water.
Common causes
- Kinked, trapped, or twisted water inlet hose restricting flow
- Debris or limescale blocking the inlet valve filter
- A faulty flow meter sending incorrect readings to the control board
- Low incoming water pressure from the household supply
- Aquastop safety device triggered by a small leak in the base tray
- Loose or damaged wiring connection at the inlet valve or flow sensor
How to fix the E425 error
- Turn off and unplug the dishwasher. Isolate the power supply before touching any water connections for safety.
- Check the water inlet hose. Straighten out any kinks or twists and make sure it isn't trapped behind the unit.
- Inspect the inlet filter. Unscrew the hose from the tap end and check the small mesh filter for limescale or debris; rinse it clean under running water.
- Test water pressure. Turn on the tap fully and check that water flows strongly into a container — weak flow points to a supply issue rather than the appliance.
- Look under the machine for leaks. If the base tray has any standing water, dry it thoroughly, as this can falsely trigger the aquastop system.
- Reset and run a test cycle. Reconnect power, restart the dishwasher, and run a short cycle to see if the code clears. If E425 returns, the flow meter or inlet valve likely needs professional replacement.
FAQ
Can I keep using the dishwasher with an E425 error showing?
It's best not to. Running cycles with a flow fault can lead to underfilling, poor cleaning results, or water leaks over time.
Does E425 mean the flow meter needs replacing?
Not always. Many cases are caused by blocked filters or kinked hoses. If those check out fine and the code persists, the flow meter or wiring is a likely next suspect.
How do I know if it's a water pressure problem rather than the dishwasher?
Test another appliance or tap on the same supply line. If pressure is weak throughout the house, the issue is with your plumbing, not the dishwasher itself.
