mypros+
Error code reference

Bosch Washer Error Code Er:24

Motor power relay failed

Avg. service call
$285
National average. Trip fee plus diagnostic plus labor. Before parts.
MyPros+ 3-day pass
$9.95
Same diagnostic steps, on your phone. Start now.
You keep in your pocket
~$275
Even before you buy the part.
Skip the service call. Fix it yourself.
Full procedure unlocks instantly.
Get Started

What the Er:24 error code actually means

Your washing machine has detected a problem with the internal switch that controls power to the motor. This switch is part of the main computer board and has stopped working correctly. The washer will not run until this board is replaced by a technician.

Diagnostic procedure

The full Er:24 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Replace faulty control module.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock Er:24 procedure $9.95

Or subscribe: $29/month for unlimited access to all codes plus Max AI diagnostics.

Most common causes of Er:24

Ranked by how often they cause this code
  1. 1Failed motor power relay on control board
  2. 2Relay driver circuit failure on control board
  3. 3Control board damage from power surge
  4. 4Intermittent wiring connection to control board

Most DIYers save hundreds by diagnosing before ordering parts.

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass

Questions people ask about Er:24

What does Er:24 mean on a Bosch washer?
Er:24 means the motor power relay on the main control module has failed. The relay is the internal switch the board uses to send power to the drive motor. When it malfunctions, the washer stops the cycle and displays this code to prevent further damage. The control module must be replaced to resolve the fault.
Is it safe to keep using my Bosch washer with Er:24 showing?
No, you should not continue operating the washer with Er:24 active. A failed motor power relay can mean the motor circuit is not properly controlled, which creates a risk of unpredictable motor operation or an electrical hazard. Stop using the machine and have the control module inspected and replaced before running another cycle.
Will resetting my Bosch washer clear the Er:24 error code?
A power reset may temporarily clear the code from the display, but it will not fix the underlying relay failure in the control module. Er:24 will return as soon as the washer attempts to start the motor again. A reset should only be used as a brief diagnostic step to confirm the fault is repeatable, not as a substitute for replacing the faulty control module.
Can I fix Er:24 myself, or do I need a technician?
Replacing a control module requires disconnecting the washer from power, accessing the control board housing, and carefully transferring wiring harness connectors to the new board. Knowledgeable DIYers comfortable working with appliance electronics can perform this repair. However, because a failed motor relay can involve a welded contact that leaves the motor circuit live, it is safest to have a qualified technician handle the diagnosis and replacement.
How much does it cost to fix Er:24 on a Bosch washer?
Control module replacement is the required repair for Er:24. Parts costs for Bosch washer control boards typically range from $150 to $350 depending on the model. Adding professional labor, total repair costs generally fall between $250 and $500. Getting a firm quote from a technician before proceeding is recommended, since costs vary by region and model.

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass