Bosch Dryer Error Code E:7111

E:7111 indicates a D-Bus version protocol mismatch involving the HomeConnect COM module. It is the 4-digit equivalent of error E:110 and means that two modules on the dryer's internal D-Bus communication network are running incompatible firmware protocol versions. This error is typically triggered by an incomplete firmware update or a module replacement that introduced a version conflict.

E:7111 relates to the smart communication system and HomeConnect functionality rather than the core heating or motor systems, so the dryer may still operate for basic drying cycles. However, remote monitoring, remote control, and HomeConnect-dependent features may not function reliably. If the error is accompanied by other fault codes or operational problems, stop using the dryer and have it serviced.

If the issue is resolved through firmware reflashing alone, repair costs typically reflect the service call and labor time, generally ranging from around $100 to $250 depending on your region and the technician's rates. If the COM module or UIM requires physical replacement, parts costs can add an additional $80 to $300 or more to the total, depending on the specific components needed.

The primary fix for E:7111 involves issuing an eFSB command to the DLCB and reflashing the UIM module, which requires access to Bosch service-level diagnostic software and tools. This is not a repair that can be performed with standard consumer-level resets or app-based troubleshooting. A certified Bosch technician with the appropriate service interface equipment is needed to carry out this procedure properly.

A standard power cycle or consumer reset is very unlikely to clear E:7111 because the underlying cause is a firmware protocol mismatch between internal modules, not a temporary communication glitch. Clearing this error requires the eFSB procedure directed at the DLCB and a UIM reflash using service-level tools. If the mismatch persists after those steps, a component replacement may be required.