What Does Error Code F16 Mean on a Bosch Washing Machine?
Firmly push the door shut until you hear a distinct click, then press Start — the machine should clear the F16 error and begin the cycle within 30 seconds (takes about 2 minutes).
Fault description
Error code F16 is a door interlock fault. When your Bosch washing machine displays F16, it means the control board has not received confirmation that the door is fully closed and locked. As a safety measure, the machine will refuse to start or will pause mid-cycle to prevent water from leaking out of an unsecured door.
In most cases the drum will remain stationary, the display will show F16, and no water will enter the machine. Occasionally the error appears partway through a wash if the door latch loses contact during operation. The fault can be as simple as a piece of laundry caught in the door seal, or it may point to a worn latch or a faulty door interlock switch.
The good news is that the majority of F16 errors are resolved without any tools or replacement parts.
Causes
- Door not fully closed — The most common reason for F16 is that the door has not been pushed firmly enough to engage the latch. Overloaded drums or a garment hanging over the door seal can prevent a proper close.
- Laundry or debris caught in the door seal — A sock, sleeve, or small item trapped between the rubber door gasket and the drum rim can stop the door from seating correctly. Even a thin layer of detergent residue built up on the seal can reduce the contact needed to trigger the lock.
- Worn or broken door latch — The plastic latch hook on the door itself can crack or wear down over time, meaning it no longer engages the strike plate inside the machine body. This is more common on machines that are several years old or used heavily.
- Faulty door interlock switch — The door interlock is an electrical component inside the machine body that physically locks the door and sends a signal to the control board confirming it is secure. If the interlock fails mechanically or electrically, the board never receives that confirmation and F16 is triggered.
- Damaged door hinge or misaligned door — A sagging or bent door hinge can cause the door to sit slightly out of alignment, so the latch hook misses the strike plate. This is often visible as a small gap around the door edge when closed.
- Wiring fault between the interlock and control board — The wiring harness connecting the door interlock to the main control board can develop a loose connector or a broken wire, particularly near the hinge where the cable flexes repeatedly. This causes an intermittent or permanent F16 even when the door closes normally.
Step-by-Step Fix
- 1
Check for laundry caught in the door
Open the door fully and inspect the rubber door seal all the way around. Remove any clothing, small items, or debris that may be sitting between the seal and the drum rim. Wipe the seal with a damp cloth to remove any detergent build-up that could be reducing contact.
- 2
Close the door firmly and restart
Push the door closed with a firm, deliberate push until you hear or feel a clear click from the latch. Do not slam it. Once closed, press the Start/Pause button to see if the machine clears the F16 error and begins operating normally.
- 3
Reduce the load and try again
If the drum is packed tightly, items near the door opening can press against the glass and prevent a proper seal. Remove two or three items, redistribute the remaining laundry evenly, and attempt to close the door again.
- 4
Perform a power reset
Switch the machine off at the wall socket and leave it unplugged for two minutes. This clears any temporary error stored in the control board's memory. Plug back in, select your programme, and try starting the machine again.
- 5
Inspect the door latch and strike plate
Look at the plastic hook on the door edge and the corresponding strike plate on the machine body. Check for visible cracks, chips, or deformation. If the hook looks worn or broken, the latch assembly will need to be replaced — this is a straightforward spare part available for most Bosch models.
- 6
Check the door alignment
With the door open, look at the hinge at the bottom of the door. If the door droops noticeably or the latch hook visibly misses the strike plate when you close it slowly, the hinge may be bent or loose. Tighten any accessible hinge screws with a Torx or Phillips screwdriver and test again.
- 7
Test the door interlock
If all physical checks pass but F16 persists, the door interlock switch is the most likely culprit. You can access it by removing the door seal and the front panel trim. A multimeter set to continuity mode can confirm whether the interlock is passing a signal when the door is closed. If there is no continuity, the interlock needs replacing.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
Contact a service technician if the door latch and interlock both appear intact but F16 continues after a power reset, or if you find the wiring harness near the door hinge is visibly damaged, burnt, or has a broken connector. These repairs involve working inside the machine cabinet and require correct component identification to avoid further damage.
You should also seek professional help if the door itself is physically misaligned due to a bent hinge that cannot be corrected by tightening screws, or if the error code appears alongside other fault codes, which may suggest a control board issue rather than a straightforward door fault.
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Frequently Asked Questions
Can I use my Bosch washing machine while it shows F16?
No. The machine will not start or will pause a running cycle when F16 is active because it cannot confirm the door is safely locked. Running the machine with an unsecured door risks water leaking onto the floor. Resolve the door fault before attempting to run a cycle.
Will F16 clear itself once I close the door properly?
In most cases, yes. Once the door is firmly closed and the interlock engages, pressing Start should clear the error automatically. If the code remains on the display after a proper close, try a power reset by unplugging the machine for two minutes before restarting.
How long does a door interlock last on a Bosch washing machine?
A door interlock typically lasts between five and ten years under normal household use. Frequent heavy loads, slamming the door, or leaving the door open between washes (which can cause the seal to stiffen) can shorten its lifespan. Replacing it is a relatively low-cost repair.
Is F16 the same as a door lock error on all Bosch models?
F16 is the standard door fault code across a wide range of Bosch washing machines, but some older or entry-level models may display the fault differently, such as a flashing indicator light rather than a numeric code. Always cross-reference your model's manual if you are unsure.
Could a power surge cause F16 to appear even if the door is fine?
Yes, occasionally. A power fluctuation can cause the control board to log a false door fault. A two-minute power reset — unplugging the machine completely — is usually enough to clear a spurious F16 caused by an electrical glitch. If the code returns immediately after the reset with the door properly closed, the fault is mechanical or electrical rather than a software glitch.