Does this guide apply to your appliance?

Match the brand, device type and complete display code. The same code can mean something different on another product family or market; a series name does not confirm every model in that series.

Model and family references in this record:

Bosch 300 SeriesBosch 500 SeriesBosch 800 SeriesBosch Serie 2Bosch Serie 4Bosch Serie 6Bosch Serie 8Bosch 100 SeriesBosch Benchmark Series

Likely causes

  • Debris, bones, or broken glass obstructing the drain pump impeller
  • Defective or burned-out drain pump motor
  • Loose, corroded, or damaged wiring harness to the drain pump
  • Faulty main control module

What to try

Inspect and clean the filter and pump impeller

Easy
  1. Disconnect the dishwasher from electrical power at the circuit breaker or wall outlet.
  2. Remove the lower dish rack and scoop out any standing water inside the tub using a sponge or cup.
  3. Twist and lift out the cylindrical filter assembly at the bottom of the tub, then rinse it thoroughly under warm running water.
  4. Remove the pump cover latch (if equipped on your model) and carefully inspect the impeller chamber for foreign objects such as broken glass, seeds, or toothpicks.
  5. Carefully turn the impeller with a gloved finger to confirm it spins freely and is not seized.
  6. Reinstall the pump cover until it firmly clicks into locked position, reinsert the filter assembly, and restore power.

This step is marked caution. Stop if you are not qualified to continue.

Source for this check: www.bosch-home.com

Perform an electrical power reset

Easy
  1. Turn off the dishwasher's power supply at the home breaker panel or unplug the power cord.
  2. Leave power completely disconnected for 5 to 10 minutes to clear the control board's temporary memory.
  3. Restore electrical power to the appliance.
  4. Run a brief rinse or drain cycle to see if the drain pump activates and the code clears.

Source for this check: www.bosch-home.com

Contact authorized service for pump diagnosis and replacement

Professional

This is a service referral, not a do-it-yourself repair procedure.

  1. If clearing debris and resetting power does not resolve error E23, shut off power and turn off the water supply valve.
  2. Locate the dishwasher rating plate on the door rim to record the model (E-Nr) and FD numbers.
  3. Contact Bosch customer support or an authorized appliance repair technician to inspect internal wiring, test pump coil resistance, or replace the drain pump.

Source for this check: www.bosch-home.com

The code returned or the check did not help?

Avoid repeated resets and do not select a replacement part from the code alone. Record the exact code, full model number, when it appeared, and the checks you tried with their results. Share these details with the manufacturer or service technician.

Disconnecting power does not establish that internal components are safe to touch. This guide does not authorize opening electrical components or bypassing safety devices.

Related error codes

Bosch E09Troubleshooting Bosch Dishwasher Error Code E09 (Heating Circuit Failure) Bosch E12Bosch Dishwasher Error Code E12: Limescale Build-up Bosch E14Bosch Dishwasher Error Code E14: Water Inflow/Flow Meter Issue Bosch E15Troubleshooting Bosch Dishwasher Error Code E15 Bosch E16Troubleshooting Bosch Dishwasher Error Code E16 Bosch E17Troubleshooting Bosch Dishwasher Error Code E17

Useful guides

Water left in the dishwasher: safe checks and when to call for serviceA small amount of clean water near the filter may be normal. Water across the tub floor, dirty standing water,... Dishwasher Not Drying? Check Settings, Loading, and Safe MaintenanceUse these owner-safe checks to improve drying, understand what moisture is normal, and know when to call a tec... Dishwasher Filter Care: What You Can Clean—and When to Call a TechnicianLearn how to identify a removable dishwasher filter, clean it safely, and recognize when a pump problem needs...

References