Bosch Washer E29 Error — Faulty Water Inlet Valve Fix

What it means

Bosch washer E29 error indicates a faulty water inlet valve — Bosch's specific code for the electric valve that opens to let water into the machine.
Either the valve solenoid has failed, the wiring is faulty, or the control board can't drive the valve correctly.

Affected Models

Bosch Serie 2 / Serie 4 / Serie 6 / Serie 8 washing machines
Bosch Logixx, Maxx, Classixx ranges (older naming)
Bosch WAW, WAT, WAY, WAQ model series
Bosch Varioperfect washers
Same codes appear on Siemens and Neff washers (shared platform)

Common Causes

Inlet valve solenoid failed (electric coil burned out)
Inlet valve mechanically stuck closed
Wiring loose between valve and main control board
Control board fault not driving the valve
Power surge damaged the valve circuit

How to Fix It

Confirm water tap is open.

Make sure the cold water tap behind the machine is fully open.
Tap closed gives similar symptoms but isn't a valve fault.
Rule it out first.
Listen for the valve.

Start a cycle and listen at the back of the machine.
You should hear a faint click or buzz as the inlet valve opens, followed by water flow.
Silence means the valve isn't getting power or has failed.
Power-cycle the washer.

Unplug for 60 seconds, plug back in.
Sometimes a stuck valve clears on a clean reboot — but E29 usually means hardware failure that won't clear on its own.
Replace the valve (technician).

If listening confirms no valve action, the valve assembly needs replacement.
Bosch washers typically have a single inlet valve assembly with multiple solenoids inside.
Technician replacement; Bosch-branded part recommended.

When to Call a Professional

Inlet valve replacement is moderate technician work — back panel comes off and the valve assembly is swapped.
Part costs £30–£50.
Owner can confirm symptoms but replacement needs technician.

Frequently Asked Questions

Why does my Bosch washer not fill at all and show E29?

Because the inlet valve is stuck closed or the solenoid that opens it has failed.
The control board sends the 'open' signal but no water flows.
The flow sensor detects zero flow and the fill timer expires, triggering E29.
This is a clear electrical fault — almost always solved by replacing the valve assembly.
If you've confirmed the tap is open and there's water pressure (other taps work), the valve is the only remaining suspect.