Bosch Washer E16 Error Code — What It Means
On most Bosch front-load washers, error code E16 (or F16) signals that the control board does not detect the door as properly locked or closed. The machine will not start the cycle because an open or faulty door lock creates a safety hazard. The fault can stem from a mechanical problem (door not fully latched, obstruction in the strike, hinge misalignment) or an electrical issue (failed door lock assembly, broken wiring, or less commonly a control board fault).
A small number of Bosch washer platforms use E16 to indicate a drain fault, and Bosch dishwashers assign E16 to a water inlet issue, so always verify the appliance type and consult your model-specific service sheet if the door lock diagnosis does not match your symptoms.
Common Causes
- Door not fully closed or obstructed Clothing, detergent buildup, or a misaligned gasket prevents the latch from engaging completely.
- Failed door lock or interlock assembly The electromechanical lock mechanism inside the door frame wears out or burns out and no longer signals the control board.
- Faulty door switch or broken wiring Corroded connectors, loose pins, or open circuits between the lock and the control board interrupt the lock-closed signal.
- Damaged door strike or latch plate The plastic or metal strike on the door frame is cracked or bent so the lock tongue cannot seat properly.
- Control board fault In rare cases the main PCB fails to recognize a good lock signal, leaving the error active even after lock replacement.
Step-by-Step Fix
- Unplug the washer and verify the door closes fully by inspecting the gasket fold, hinge alignment, and strike area for obstructions or damage.
- Remove the front panel or service access to expose the door lock assembly mounted in the door frame (consult your model’s manual for screw locations).
- Disconnect the door lock connector and inspect both the lock terminals and the harness plug for corrosion, burn marks, loose pins, or broken wires.
- Test the door lock electrically by checking for continuity changes when you manually actuate the lock tongue, or measure resistance across the lock coil per your model’s service data (values vary by platform).
- Replace the door lock assembly if it shows open or incorrect readings, making sure the new lock seats flush and the strike engages the lock tongue with an audible click.
- Check the wiring harness from the lock to the control board for opens or intermittent connections if the new lock still throws E16.
- Reconnect power, close the door firmly, and start a short cycle to confirm the error clears and the drum begins to fill and spin.
Parts Often Needed
| Part | Notes |
|---|---|
| Bosch washer door lock assembly | Amazon | Match your E-Nr. model number (on the door frame) to get the correct lock platform and connector style. |
| Door lock wiring harness | Amazon | Order if the connector housing is melted, cracked, or pins are backed out and cannot be re-pinned. |
| Door strike or latch plate | Amazon | Needed if the plastic tongue holder is broken or the metal plate is bent so the lock cannot engage. |
| Main control board (PCB) | Amazon | Replace only after confirming the lock and wiring are good and the fault persists through a power reset. |
When to Call a Pro
If you have verified the door closes fully and cleaned any obstructions but the E16 error returns immediately, or if you are uncomfortable working with 120 V wiring and testing continuity inside the cabinet, contact a Bosch-certified technician. Also call a professional if you replace the door lock and harness but the fault does not clear after a power cycle, since that points to a control board issue that requires model-specific diagnostics and possibly firmware tools.