ErrorCodeDoctor
Bosch · Dishwasher

Bosch Dishwasher E21 / E6002 error code

Difficulty: Hard · Cost: $100–$300 · Duration: Requires professional service

The E21 or E6002 error means your Bosch dishwasher's heat pump is blocked. Flip the breaker off for about thirty seconds, then back on. If the error returns contact a qualified technician.

Common causes

  • Heat pump is blocked with debris or limescale
  • Heat pump motor cannot operate due to a blockage

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

E21 / E6002 error — frequently asked questions

What does the E21 / E6002 error mean on a Bosch dishwasher?

The heat pump is blocked

What causes the E21 / E6002 error?

The E21 / E6002 error is usually caused by: Heat pump is blocked with debris or limescale; Heat pump motor cannot operate due to a blockage.

Can I fix the E21 / E6002 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 E21 / E6002 error?

Fixing the E21 / E6002 error on a Bosch dishwasher typically costs $100–$300, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my dishwasher with the E21 / E6002 error?

We'd recommend addressing the E21 / E6002 error before continuing to use the dishwasher, since hard-rated issues often involve a real fault rather than a minor glitch.