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Error code reference

Bosch Washer Error Code d:15

Power limiter warning

Bosch codesBosch washer codes

Power limiter warning — motor overloaded or binding.

First step from the service manual

Run test P4; check for motor overload or binding condition.

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

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What d:15 means on a Bosch washer

The d:15 error code on a Bosch washer indicates a power limiter warning, which is triggered when the control system detects that the drive motor is drawing excessive current due to an overload or a mechanical binding condition. The power limiter circuit monitors motor load in real time and activates this warning when current consumption exceeds safe operating thresholds, protecting both the motor windings and the electronic control board from thermal or electrical damage.

The most common sources of this fault are physical restrictions on drum rotation or a failing motor that cannot sustain normal operating loads. A binding condition can result from a worn drum bearing, a seized motor shaft, a foreign object lodged between the drum and tub, or a drive belt or coupling that is damaged and creating excess drag. In each of these scenarios, the motor is forced to draw more current than the power limiter allows, causing the warning to trigger and halting the cycle.

Diagnosing d:15 requires running the machine's built-in test program P4, which exercises the motor and evaluates its load characteristics under controlled conditions. During P4, the technician should listen for abnormal sounds such as grinding or squealing, and manually assess whether the drum rotates freely when the unit is unpowered. If the drum spins without resistance by hand but the error persists during P4, attention should shift to the motor itself, its connections, and the motor control board.

Source: manufacturer service documentation.

Common causes of d:15

  1. 01

    Foreign object jamming the drum

    Wiring / connection

    Coins, bra underwires, or small clothing items can lodge between the drum and the tub, creating a hard binding point that forces the motor to stall. Check by rotating the drum slowly by hand with the power off to feel for resistance or a catch point.

  2. 02

    Worn or seized drum bearings

    Part replacement

    Failed drum bearings create significant rotational friction, placing a sustained overload on the motor. Grinding or rumbling sounds during the spin cycle often accompany this failure, and the drum will feel rough or stiff when turned manually.

  3. 03

    Damaged drive belt or coupling

    Part replacement

    A frayed, cracked, or misaligned drive belt can create excessive mechanical drag between the motor and drum. Inspect the belt for visible wear, glazing, or improper tension that would increase the load the motor must overcome.

  4. 04

    Motor winding failure or overheating

    Part replacement

    Internal motor winding faults cause the motor to draw abnormally high current even without a mechanical obstruction. If P4 test results show overload with a freely spinning drum, the motor itself should be tested for winding resistance and continuity.

  5. 05

    Motor control board fault

    Part replacement

    A failing motor control board can misread current levels or fail to regulate power delivery properly, falsely triggering the power limiter. This is typically a diagnosis of exclusion after mechanical and motor causes are ruled out.

See the test procedure for each cause

Frequently asked questions about d:15

What does d:15 mean on a Bosch washer?
The d:15 code is a power limiter warning indicating that the motor is experiencing an overload or a binding condition. The machine's control system detected excessive current draw from the drive motor and halted the cycle to prevent damage. The recommended first diagnostic step is running test program P4 to evaluate the motor under controlled conditions.
Can I fix the d:15 error myself?
Some causes of d:15 are DIY-friendly, such as removing a foreign object lodged in the drum or checking for an obvious obstruction. However, diagnosing motor bearing failure, drive belt damage, or motor winding faults requires disassembly and some technical knowledge. Running the P4 test is a good starting point, and if the drum rotates freely by hand with no obstructions found, a technician should evaluate the motor and control board.
Is it safe to keep using my washer when d:15 appears?
No, you should not continue running the washer while d:15 is active. The warning exists to protect the motor and electronic components from damage caused by sustained overload. Operating the machine repeatedly through this fault condition risks burning out the motor windings or damaging the control board, which would significantly increase repair costs.
How much does it cost to repair a Bosch washer with a d:15 error?
Repair costs vary widely depending on the root cause. Clearing a foreign object obstruction may cost nothing beyond diagnostic time, while drum bearing replacement typically runs in the range of $150 to $350 for parts and labor. Motor replacement on a Bosch washer can range from $250 to $500 or more depending on the model and local labor rates. A motor control board repair or replacement generally falls in a similar range.
Will resetting the washer clear the d:15 error?
A reset may temporarily clear the d:15 code, but the error will return if the underlying cause has not been addressed. Because this code is tied to an active motor overload or binding condition, the machine will trigger the warning again as soon as it attempts to run the motor under the same faulty conditions. The mechanical or electrical root cause must be resolved to permanently clear the fault.

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