Bosch Dishwasher Error Code Er:22

Er:22 means the dishwasher's control board has detected a frequency synchronization failure with the incoming mains power supply. The board monitors the AC line frequency to time its internal operations, and this error appears when that frequency signal is absent, too weak, or unstable. The dishwasher shuts down to protect its components until the issue is corrected.

No, you should not continue using the dishwasher while Er:22 is active. The error indicates an electrical supply problem, and running the appliance under unstable power conditions could damage the motor, control board, or other components. Resolve the power supply issue before resuming normal use.

The repair cost depends on the root cause. If the fix is a loose outlet connection or a tripped breaker, costs may be minimal. Replacing a circuit breaker typically runs in the range of $75 to $200 including labor. A control board replacement, if required, can cost between $150 and $400 or more depending on the model and labor rates in your area.

Start by checking the power supply at the wall outlet or junction box for loose connections, corrosion, or low voltage. Test the outlet voltage with a multimeter to confirm it is within the expected range. If the outlet is fine, inspect the circuit breaker and internal dishwasher wiring for damage. If the power supply is confirmed stable and the error persists, the control board may need to be evaluated by a technician.

A reset may temporarily clear the error code, but it will return if the underlying power supply problem is not fixed. To reset, turn the dishwasher off at the power source for a few minutes, then restore power. If Er:22 comes back immediately or during the next cycle, the root cause needs to be diagnosed and corrected.