Bosch Dishwasher E01 error code

E01 means the main control board detected a heat pump motor circuit fault. The board cannot drive the circulation pump/heater unit correctly, so the cycle stops.

Also shown as: E01, E:01, E 01

Last updated: October 6, 2026

Quick answer: Bosch dishwasher error code E01: control board pump circuit fault. The most common cause is failed heat pump motor circuit on the main control board. Try this first — reset power at the breaker for 30 seconds. If that does not clear it, clean the filter and sump.

What causes the E01 error?

  • Failed heat pump motor circuit on the main control board
  • Failed circulation pump motor
  • Loose or burnt wiring to the heat pump
  • Low water level locking out the heater as a precaution
  • Power surge damaging the board
  • Worn pump bearings overloading the motor circuit

How to fix Bosch E01 — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Reset power at the breaker for 30 seconds
    Turn off the breaker for 30 seconds, then restore power. This is Bosch's official first step. If E01 returns immediately, the fault is hardware, not a glitch.
    Safety warning: Use the breaker — most Bosch dishwashers are hardwired.
  2. Clean the filter and sump
    Remove the bottom rack, take out the filter assembly, and clean it. Check the sump for glass or debris jamming the circulation pump. A jammed pump can trip the circuit fault.
    Safety warning: Turn off the breaker before reaching into the sump.
  3. Confirm the dishwasher fills with water
    Start a cycle and listen. You should hear water filling within the first minutes. If the tub stays dry, fix the water supply first — low water can trigger E01 as a side effect.
  4. Call Bosch support if it persists
    Bosch's official guidance for E01 is to call Bosch Customer Support at 1-800-944-2904 if the reset does not clear it. Board-level repair needs a certified technician.
    Safety warning: Do not open the base to reach the control board yourself.
Related guide: Dishwasher troubleshooting — fix common problems, with links to every dishwasher error code we cover.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • E01 returns right after the 30-second reset
  • The circulation pump is silent or jammed
  • You see burnt wiring or smell burning
  • The dishwasher is under warranty — call Bosch support

Frequently asked questions

Can I fix E01 myself?

You can try the reset and clean the filter and pump area. Beyond that, E01 is a control-board-level fault that Bosch says needs a technician.

Is E01 the same as E02?

They are related but different. E01 is the heat pump motor circuit. E02 is a relay fault on the main control board.

Will the dishwasher run at all with E01?

No. The control blocks the cycle because it cannot safely drive the pump and heater.

Sources

Every meaning and fix above was checked against official manufacturer documentation:

FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.

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