Appliance Error CodeDatabase
Verified Bosch Dishwasher code

Bosch Dishwasher E23 error code

Waste-water pump fault. Start with safe external checks, then confirm the code against documentation for your exact model.

Manufacturer-source verifiedReviewed 2026-08-23Service may be needed
CodeE23
ApplianceDishwasher
MeaningWaste-water pump fault

What this code means

A fault with the waste-water pump has been detected.

Model check: Code meanings and procedures can vary by model family and market. Record the full model number before ordering parts or following a model-specific reset sequence.

Safe checks to start with

  1. Arrange professional service rather than dismantling the pump.
  2. Inspect only user-accessible areas described in the owner manual.
  3. After correcting an obvious external issue, restart the appliance once and see whether the code returns.
  4. If you see smoke, arcing, a burning smell, active leaking, gas odour or uncontrolled heating, stop using the appliance and isolate the relevant utility if safe.
Report a problem
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DIY or technician?

Basic external checks only; use the exact model manual before removing panels or testing electrical components.

Repair-cost band: moderate. Actual cost depends on model, parts, access, labour and region. See the repair cost guide before booking work.

Related codes and symptoms

Bosch Dishwasher E09Internal dishwasher faultBosch Dishwasher E12Limescale in heating systemBosch Dishwasher E14Filling/water inflow faultBosch Dishwasher E15Water in base / leak protection activeBosch Dishwasher E16Filling/water inflow faultBosch Dishwasher E19Dispenser or internal valve fault
Primary verification source: Bosch Support. Last reviewed 2026-08-23. This independent summary is not a substitute for the exact model manual.