Bosch Washer Error Code Er:08

Er:08 means the washer has detected that its heating element is not shutting off as commanded. The fault points to either a stuck heater relay or a faulty heating element in the wash circuit. The control board triggers this code when it determines the heater is staying energized beyond the expected cutoff point. Diagnostic test P16 is used to isolate the exact component responsible.

It is not recommended to continue running the washer with Er:08 active. A heater that cannot shut off can overheat the water, potentially damaging laundry, internal components, or in a worst case creating a hazard. Stop using the machine and have the fault diagnosed before running additional cycles.

A power reset may temporarily clear the code from the display, but it will not fix the underlying hardware fault. If the heater relay is stuck or the heating element is defective, the error will return as soon as the heater circuit is activated again. A proper repair requires diagnosing and replacing the failed component through service test P16.

Diagnosing this code requires running service test P16 and performing resistance and continuity checks on the heater and relay, which is within reach for experienced DIYers with a multimeter. However, replacing the heater element or a relay mounted on the control board involves working with high-voltage components, so it carries real safety risk if proper precautions are not taken. Many homeowners prefer to have a qualified technician handle this repair.

Repair costs vary depending on which component has failed. A replacement heating element typically runs in the range of $30 to $80 for the part, while a control board replacement can range from $150 to $350 or more for the part alone. Adding labor, a full repair with a technician generally falls between $100 and $450 depending on the faulty component and local rates.