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Error code reference

Bosch Washer Error Code d:07

Motor control (inverter) failed or motor shorted

Bosch codesBosch washer codes

Motor control (inverter) failed or motor shorted — faulty motor control or motor.

First step from the service manual

Run test P4; check motor control and motor.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What d:07 means on a Bosch washer

Error code d:07 on a Bosch washer indicates a failure in the motor control inverter circuit or a shorted condition in the drive motor itself. The inverter board is responsible for converting DC power into the variable-frequency AC output used to control motor speed and torque. When this board detects an internal fault, an overcurrent condition, or a loss of communication with the motor windings, it triggers d:07 to protect the system from further damage.

The diagnostic procedure begins with test P4, which is a motor and motor control diagnostic routine built into the machine's service mode. This test exercises the motor control board and drive motor together, allowing the technician to isolate whether the fault lies in the inverter electronics, the motor windings, or the wiring between them. A shorted motor winding will typically present as an overcurrent fault on the inverter board, while an internally failed inverter may produce the code even with a known-good motor connected.

Common root causes include degraded motor windings that have developed a short to ground or between phases, a failed inverter board due to heat stress or component failure, and damaged wiring harnesses running between the inverter and the motor. In some cases, water intrusion into the motor or inverter connector can create a resistive short that triggers the fault intermittently before becoming a hard failure.

Source: manufacturer service documentation.

Common causes of d:07

  1. 01

    Failed motor control inverter board

    Part replacement

    The inverter board develops an internal component failure due to heat stress or electrical surge, causing it to fault even when the motor is healthy. Running test P4 can help confirm whether the board is producing the fault independently of the motor.

  2. 02

    Shorted drive motor windings

    Part replacement

    A short between motor phases or from a winding to ground will cause an overcurrent condition that the inverter board detects and flags as d:07. Resistance testing across the motor terminals can confirm whether the windings are within spec or have failed.

  3. 03

    Damaged wiring harness between inverter and motor

    Wiring / connection

    Chafed, pinched, or corroded wires in the harness connecting the motor control board to the drive motor can create intermittent or sustained short circuits. Visually inspect the harness and check for continuity and isolation on each conductor.

  4. 04

    Water intrusion into motor or inverter connector

    Wiring / connection

    Moisture in the motor housing or inverter connector can create a resistive short that triggers d:07, sometimes intermittently at first. Inspect connectors for corrosion, moisture, or oxidation and dry or clean as needed before retesting.

  5. 05

    Loose or corroded motor control connector

    Wiring / connection

    A poor connection at the inverter board or motor terminal block can cause signal loss or voltage irregularities that the inverter interprets as a motor fault. Disconnect, inspect, and reseat all connectors at both ends of the motor circuit.

See the test procedure for each cause

Frequently asked questions about d:07

What does d:07 mean on a Bosch washer?
Error code d:07 indicates that the motor control inverter has failed or the drive motor has developed a shorted condition. The washer stops operation to prevent further damage to the motor circuit. Diagnosis requires running the built-in test P4 to determine whether the inverter board, the motor, or the wiring between them is at fault.
Can I fix d:07 on my Bosch washer myself?
Some basic checks, such as inspecting wiring connectors for damage, corrosion, or moisture, can be done by a knowledgeable DIYer. However, accessing the motor control inverter board and running service test P4 typically requires disassembly of the machine and familiarity with service mode procedures. If the inverter board or motor itself needs replacement, a trained technician is recommended for safe and accurate repair.
Is it safe to use my Bosch washer while d:07 is displayed?
No, you should not continue to operate the washer with d:07 active. A shorted motor or failed inverter board can cause further electrical damage and may present a safety risk. The machine is designed to halt operation when this fault is detected, and it should remain out of service until the cause is diagnosed and repaired.
How much does it cost to repair a Bosch washer with error code d:07?
Repair costs depend on which component has failed. A wiring harness repair or connector cleaning may cost relatively little in labor only. Replacing the motor control inverter board typically ranges from $200 to $450 including parts and labor, while a full drive motor replacement can range from $250 to $550 or more depending on the model and service rates in your area.
Will resetting my Bosch washer clear the d:07 error code?
A power reset may temporarily clear the d:07 code, but it will return as soon as the washer attempts to run the motor again if the underlying fault is still present. Because this code points to a hardware failure in the motor or inverter circuit, resetting alone will not resolve the problem. The root cause must be identified and repaired before the machine will operate normally.

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