Bosch Washer Error Code E29 — What It Means & How to Fix It

What Does This Error Mean?

The E29 error on your Bosch washer means the machine is not detecting water flowing in, even though the inlet valve has been opened. The flow meter (a sensor that measures water entering the drum) is either not detecting flow or is reporting a very low flow rate. This usually points to a water supply problem or a faulty flow sensor.

Affected Models

Bosch 300 Series
Bosch 500 Series
Bosch 800 Series
Most Bosch front-load washers with flow meters

Common Causes

The water supply tap behind the machine is turned off or only partially open
The inlet hose filter screen is clogged with sediment and restricting water flow
The flow meter sensor has failed and is not registering water movement
The water inlet valve is partially blocked or has failed
Very low water pressure in the home is insufficient for the machine to operate

How to Fix It

Check that the water supply tap (usually behind the machine) is fully turned on. Some taps get bumped into a partially-closed position.

The tap should be turned fully counter-clockwise (open). Even 50% open can restrict flow enough to trigger E29.
Turn off the water tap and disconnect the inlet hose from the back of the machine. Inspect the filter screen inside the hose fitting.

This small mesh screen catches sediment from your water pipes. A blocked screen is one of the most common causes of water fill errors.
Clean the filter screen under running water or with a soft brush. Reattach the hose and turn the water back on.

Be sure to tighten the hose connection — even a small water leak here can cause other problems.
Check your home's water pressure by running a nearby tap. If the flow seems weak, your water pressure may be too low for the machine.

Bosch washers typically require at least 1 bar (15 PSI) of water pressure to operate correctly.
If water supply and pressure are fine and E29 persists, the flow meter or inlet valve needs professional inspection and likely replacement.

The flow meter sits inside the water inlet path and requires partial disassembly to access.

When to Call a Professional

If the water supply checks out fine and E29 persists, a technician should test the flow meter and inlet valve. Flow meter replacement costs around $80–$160. Inlet valve replacement runs $100–$200 including labor.

Frequently Asked Questions

Why does E29 sometimes appear and then go away on its own?

If your home water pressure fluctuates (common during peak usage hours), the machine may occasionally fail to detect adequate flow. This can cause E29 to appear and then clear once normal pressure resumes. If it happens regularly, check your home's water pressure.

How do I clean the Bosch washer inlet hose filter?

Turn off the water supply tap first. Disconnect the inlet hose from the washer. You will see a small mesh screen inside the metal fitting. Pull it out carefully with pliers, rinse it under the tap, and push it back in. Reconnect the hose and turn the water on.

Can hard water deposits cause E29?

Yes, over time. In hard water areas, mineral deposits can build up inside the inlet valve and restrict water flow. Regular descaling and cleaning helps prevent this. A heavily scaled inlet valve will need professional cleaning or replacement.