Bosch F08 washing machine: what it means & what to check

Stop using it for now. Carrying on with this fault risks further damage or a leak. Switch it off at the wall until it has been looked at.

What F08 actually means

The machine can't confirm the door is properly locked, so it won't start or carry on with the wash.

On Bosch machines this family of codes (F08 sits alongside E01, F16, F34 and E61) points at the door interlock the control board asks the lock to engage and doesn't get the signal back that it has. Because the drum can't be allowed to turn with an unsecured door, the cycle stops there. You'll usually see it right at the start of a programme, or occasionally mid-cycle if the lock drops out under vibration.

What F08 looks like on a Bosch washing machine

Most people find this page having searched for what the machine is doing rather than the code itself. On a Bosch washing machine, F08 usually shows up as one or more of these:

Machine door won't open
Door won't lock or click shut
Door lock light flashing
Door stuck shut with the load inside
Won't start even with the door closed
Very noisy on spin
Banging or knocking
Moving across the floor

Recognise any of those? That is this fault, and the rest of this page explains what causes it and what you can check yourself.

What usually causes it

Worn or failed door interlock by far the most common
Door not shutting fully onto the catch, so the lock never engages
Laundry or a stray sock trapped in the door seal holding the door proud
Sagging door hinge or misaligned catch on older front-loaders
Wiring or control board fault at the lock circuit (less common)

What you can safely check yourself

Work through these in order. Anything beyond this — panels off, testing parts, anything to do with the wiring — is an engineer's job, and not one to attempt with the machine plugged in.

Open the door and close it again firmly, making sure nothing is caught in the rubber seal
Check no laundry is pushed up against the door edge
Turn the machine off at the wall for a minute, then switch back on and restart the programme
Look at whether the door feels loose or drops when open that points at the hinge or catch

Common questions about Bosch F08

What does F08 mean on a Bosch washing machine?

The machine can't confirm the door is properly locked, so it won't start or carry on with the wash. On Bosch machines this family of codes (F08 sits alongside E01, F16, F34 and E61) points at the door interlock the control board asks the lock to engage and doesn't get the signal back that it has. Because the drum can't be allowed to turn with an unsecured door, the cycle stops there. You'll usually see it right at the start of a programme, or occasionally mid-cycle if the lock drops out under vibration.

Can I fix Bosch F08 myself?

There are 4 checks you can safely do yourself first.

Open the door and close it again firmly, making sure nothing is caught in the rubber seal.
Check no laundry is pushed up against the door edge.
Turn the machine off at the wall for a minute, then switch back on and restart the programme.
Look at whether the door feels loose or drops when open that points at the hinge or catch.

This one usually needs an engineer once you have tried them.

How much does it cost to repair Bosch F08?

£66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Tried the checks and it's still showing F08?

This one usually needs an engineer once you have tried the checks above. Then it wants someone who can open it up.

What it costs, before you call: the price is the same whatever the fault turns out to be — £66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Our own engineers, not a call centre. We cover Nottinghamshire, Derbyshire and Leicestershire — most washing machine faults are seen same day or next day.

Call 0115 648 0929 Book online — postcode and number is all we need

Outside our area? The explanation above still stands — take it to a local engineer and tell them the code. Knowing it saves them time and you money.

Other Bosch washing machine codes

All Bosch fault codes and repairs →

What this looks like when it happens

Repairs we cover near you

Written by the engineers at ASAP Repairs, 0115 648 0929. We repair these machines for a living in Nottinghamshire, Derbyshire and Leicestershire.

Bosch F08 error — washing machine