Bosch Dryer Error Code E:110

E:110 indicates a D-Bus version protocol mismatch involving the COM module, which is the HomeConnect smart connectivity board. The COM module and another internal control module are running firmware that uses incompatible communication protocol versions. This prevents the modules from exchanging data correctly. The error is a software-layer issue and is addressed by issuing an eFSB update to the DLCB and, if needed, reflashing the UIM module.

The E:110 error specifically targets the HomeConnect communication module and does not directly affect the core drying functions of the appliance. In many cases the dryer may still operate for standard cycles. However, any smart home or remote control features tied to the HomeConnect system will not function reliably until the error is resolved. Consult a qualified technician if you are uncertain about operation.

If the issue is resolved through a firmware reflash alone, repair costs are primarily the labor charge for a service call, which typically ranges from around $80 to $150 depending on your location. If a component such as the COM module or UIM module requires replacement, total repair costs including parts and labor can range from $150 to $400 or more depending on parts pricing and local labor rates.

A basic power reset is unlikely to permanently clear E:110 because the underlying cause is a firmware version mismatch between internal modules. The mismatch will persist across power cycles until the firmware is synchronized. A proper fix requires issuing an eFSB command to the DLCB or reflashing the UIM module through a service procedure.

The repair process starts with issuing an eFSB (electronic Firmware Service Bundle) command to the DLCB to attempt a firmware environment synchronization. If E:110 persists after that step, the UIM module needs to be reflashed with current firmware. These procedures typically require a service technician with access to Bosch diagnostic tools. If reflashing does not resolve the mismatch, the COM module or UIM module may need to be replaced.