Bosch Dishwasher E01 and Not Draining: Treat the Circuit Fault and Drain Symptom Separately

Use only checks that match the exact appliance or system and its official guide.

1. Check 1

   Photograph the display and record the full model/E-Nr, cycle stage, whether E01 is shown exactly, whether the cycle stopped during drain, and whether water is pooled at the bottom.

   Expected result: E01 is repeatable, a different code is shown, standing water is present, or there is no standing water.

   Next step: Use the E01 reset only for a confirmed E01 display. Use drain checks only for persistent standing water, and take a different code to its exact Bosch support entry.

   Why this matters

   Why: Bosch defines E01 separately as a heat-pump motor-circuit fault; standing water is a separate pumping/drain symptom and a different code must not be mapped to E01.

2. Check 2

   For a confirmed E01 with no immediate leak or electrical hazard, switch the dishwasher off at the breaker for 30 seconds and restore power once.

   Expected result: E01 clears, E01 returns, or the dishwasher cannot be safely isolated.

   Next step: If E01 returns, stop resetting and contact Bosch with the model and code. If isolation is unsafe or there is a leak/electrical hazard, leave the unit off and obtain qualified help.

   Why this matters

   Why: Bosch documents the 30-second breaker reset for E01, but a reset does not establish or repair a drain blockage or an internal circuit fault.

3. Check 3

   Only when standing water is present, switch the dishwasher off and use the exact Owner's Manual to locate the filter; clean a removable filter with soap and a soft brush, and inspect the pump area only if the manual allows it.

   Expected result: Food debris or standing water is accessible, the filter is clear and correctly reseated, or access requires force or cabinet removal.

   Next step: Reinstall only documented parts. If access is unclear or the part resists, stop and arrange service rather than forcing a cover or opening the cabinet.

   Why this matters

   Why: Bosch identifies filter or pump debris as a common no-drain cause, but the check does not identify the E01 heat-pump motor circuit or authorize control-board repair.

4. Check 4

   After a correct model-supported filter check, note whether standing water clears at the next safe drain stage; do not repeatedly run the appliance while water remains or while E01 returns.

   Expected result: The water clears, remains, or appears outside the appliance.

   Next step: If water remains, leave the dishwasher off and contact Bosch. If water leaks into an electrical area, isolate water/power only if safely accessible and do not continue testing.

   Why this matters

   Why: Clearing supports an accessible blockage or debris condition being corrected. Persistent water or a leak does not identify a pump, hose or control part from outside.

5. Check 5

   Give Bosch service the E-Nr, exact E01 display, cycle stage, water level, filter/pump observations, reset result and any leak or odor information.

   Expected result: E01 returns, no-drain persists after the documented external check, another code appears, or the appliance has a leak/electrical hazard.

   Next step: Stop using the dishwasher and arrange Bosch or qualified service. Do not open the control, probe energized wiring, bypass safety devices or replace the pump based only on E01.

   Why this matters

   Why: Bosch routes a persistent E01 to support and treats persistent no-drain as a service condition; the combined symptoms do not prove one replaceable part.