Bosch Range Error Code ER22

ER22 on a Bosch range indicates a fault with the electric cooktop MTwisT control keyboard. The MTwisT system is the touch-and-twist input panel used to select burners and adjust heat levels. The control board has detected that it cannot properly communicate with or read input from this keyboard assembly. The cooktop will not operate normally until the fault is resolved.

It is not recommended to continue using the electric cooktop while ER22 is active, as the fault means the control keyboard is not functioning reliably. Operating the cooktop with a faulty input system could result in unpredictable behavior, including burners not responding correctly to commands. The oven portion of the range may still function depending on the specific model, but the cooktop should be considered out of service until the fault is resolved.

Repair costs for ER22 vary depending on the root cause. If only a wiring connector needs to be reseated, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the MTwisT keyboard assembly requires replacement, parts and labor combined can range from $200 to $500 or more depending on the model and parts availability. Control board replacement tends to be at the higher end of the repair cost spectrum.

Some causes of ER22 are approachable for a knowledgeable DIYer, such as cleaning moisture or debris from the control panel surface or reseating a loose wiring connector. However, replacing the MTwisT keyboard assembly or the main control board requires disassembling the cooktop and working with electrical components, which is best handled by a qualified appliance technician. Always disconnect power to the range before inspecting any internal components.

Cutting power to the range at the circuit breaker for several minutes and then restoring it may temporarily clear the ER22 code if the fault was caused by a transient condition such as a momentary signal disruption. However, if the underlying cause is physical damage, a failed keyboard, or a wiring issue, the error will return once the range is powered back on. A reset alone is not a fix and should be treated as a diagnostic step rather than a solution.