Bosch washer error ER06 means there is a short in the NTC (Water Temperature Sensor) circuit. Check the connections and wiring from the main control board to the NTC, if the wiring checks out replace the NTC. The replacement sensor can be ordered from the link below.
Click Here To Order The Water Temperature Sensor
This Bosch Washer ER06 error troubleshooting and repair information applies to model WFVC6450UC and all the models listed under the related models section below.
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