Bosch Dishwasher Error Code E:0100

E:0100 signals an internal fault in the power module, specifically that the electrical connection to the pumps has been interrupted or that voltage has dropped below acceptable levels. The power module monitors the circuits feeding the circulation and drain pumps, and this code appears when it cannot confirm proper electrical continuity or voltage. The cause can range from a loose wire connector to a faulty power module itself.

It is not recommended to continue running the dishwasher while E:0100 is active. The error indicates an electrical fault in the power distribution system, which could prevent the pumps from operating correctly and may point to a wiring issue that poses a risk if left unaddressed. Disconnect the appliance and diagnose the fault before attempting further use.

If the fault is a loose connector or a bad wall outlet connection, the repair cost may only involve a service call fee, typically in the range of $75 to $150. If the power module requires replacement, parts alone can range from $150 to $350 or more depending on the model, with total repair costs including labor often falling between $250 and $500. Getting a diagnosis before committing to parts replacement is the best way to avoid unnecessary expense.

Some steps are DIY-friendly, such as checking that the wall outlet is functioning, inspecting the rear power connection on the appliance, and reseating any loose wiring connectors at the pumps or power module. However, working inside the dishwasher involves exposure to line-voltage components, so anyone unfamiliar with electrical safety should hire a qualified technician. If the power module itself needs replacement, that repair is generally more involved and typically requires a professional.

A reset may temporarily clear the code, but E:0100 will return during the next cycle if the underlying electrical fault is still present. The correct approach is to inspect and correct any wiring or supply voltage issues first, then run the dishwasher's built-in test program to confirm the fault is resolved. Repeated resets without fixing the root cause will not repair the problem.