ErrorCodeDoctor
Bosch · Washing Machine

Bosch Washing Machine E:30 / -20 error code

Difficulty: Medium · Cost: $0–$150 · Duration: 5–10m

The E:30 -20 error means your Bosch washing machine detected too much water inside the drum. This can be caused by using too much detergent which generates excess suds that displace water, adding extra water manually during a cycle, or a defective solenoid valve that is not closing correctly. If suds are the cause reduce detergent for future cycles. If the solenoid valve is defective contact a qualified technician.

Common causes

  • Too much detergent was used generating excess suds and affecting water level measurement
  • Extra water was added to the machine while it was operating
  • Solenoid inlet valve is defective and not closing properly

How to fix it

  1. 1

    If suds are visible mix one tablespoon of fabric softener with 2 cups of water and pour into compartment II

  2. 2

    Do not add this mixture if washing outdoor clothing sportswear or down-filled items

  3. 3

    Reduce the amount of detergent for future cycles

  4. 4

    Do not add extra water to the machine while it is operating

  5. 5

    If the error persists after adjusting detergent use the solenoid valve may be defective — contact a qualified technician

Related Bosch Washing Machine error codes

1

CL

Child Lock is activated — the controls are disabled

easy
2

E:00 -18

The drain pump is blocked or obstructed

easy
3

E:00 -23

Water was detected in the base of the machine — possible leak

hard
4

E:10 / -00 / -10 / -20

The intelligent dosing system pump is blocked

easy

E:30 / -20 error — frequently asked questions

What does the E:30 / -20 error mean on a Bosch washing machine?

Too much water entered the machine — detergent overuse or solenoid valve fault

What causes the E:30 / -20 error?

The E:30 / -20 error is usually caused by: Too much detergent was used generating excess suds and affecting water level measurement; Extra water was added to the machine while it was operating; Solenoid inlet valve is defective and not closing properly.

Can I fix the E:30 / -20 error myself?

It's possible for a moderately handy person, but budget 5–10m and expect some disassembly.

How much does it cost to fix the E:30 / -20 error?

Fixing the E:30 / -20 error on a Bosch washing machine typically costs $0–$150, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my washing machine with the E:30 / -20 error?

In most cases yes, but it's best to address the E:30 / -20 error soon — see the fix steps below to resolve it.