Bosch washer ER12 Error means the water inlet time was exceeded. If after trying to fill for six minutes and the control has not detected water entering the washer the main control will kill the cycle and report this error. Causes of the ER12 error code and things to check would be a bad water inlet valve, corroded or bad connections between the control and water inlet valve, blocked water inlet hoses or no water pressure to the washer.
This Bosch Washer ER12 error troubleshooting and repair information applies to model WFVC6450UC and all the models listed under the related models section below.
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