ErrorCodeDoctor
Bosch · Dishwasher

Bosch Dishwasher E09 / E20 / E6001 error code

Difficulty: Hard · Cost: $100–$350 · Duration: Requires professional service

The E09, E20, or E6001 error means your Bosch dishwasher detected an internal fault with the heat pump heater. This code is also indicated by flashing Active and Sanitized lights or flashing Clean and Sanitized lights on models without a digital display. Flip the breaker off for about thirty seconds, then back on. If the error returns contact a qualified technician.

Common causes

  • Heat pump internal heater has malfunctioned or failed
  • Heat pump circuit fault

How to fix it

  1. 1

    Flip the breaker off for about thirty seconds, then back on

  2. 2

    Turn the breaker back on and check if the error has cleared

  3. 3

    If the error returns contact a qualified technician

Related Bosch Dishwasher error codes

1

E01 / E0100

A heat pump motor circuit fault was detected at the main control board

hard
2

E02 / E03 / E0103 / E0107

A main control board relay fault was detected

hard
3

E04 / E0105

Faulty heater electronics were detected during self-test

hard
4

E05 / E0106

A wash arm diverter circuit fault was detected at the main control board

hard

E09 / E20 / E6001 error — frequently asked questions

What does the E09 / E20 / E6001 error mean on a Bosch dishwasher?

A heat pump internal heater fault was detected

What causes the E09 / E20 / E6001 error?

The E09 / E20 / E6001 error is usually caused by: Heat pump internal heater has malfunctioned or failed; Heat pump circuit fault.

Can I fix the E09 / E20 / E6001 error myself?

This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.

How much does it cost to fix the E09 / E20 / E6001 error?

Fixing the E09 / E20 / E6001 error on a Bosch dishwasher typically costs $100–$350, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my dishwasher with the E09 / E20 / E6001 error?

We'd recommend addressing the E09 / E20 / E6001 error before continuing to use the dishwasher, since hard-rated issues often involve a real fault rather than a minor glitch.