Bosch Refrigerator Error E20

⚡ Quick Answer: The Bosch refrigerator error code E20 signifies a communication failure between the main control board and the display control module. This often resu... ✅ DIY Fixable

What Does Error E20 Mean?

The Bosch refrigerator error code E20 signifies a communication failure between the main control board and the display control module. This often results in the E20 code appearing on the control panel, which may lead to operational disruptions and cooling performance issues. Unusual noises or lack of airflow can accompany this error, indicating potential malfunctions in the evaporator fan. Addressing this issue typically involves inspecting and repairing the communication wiring and control boards.

Common Symptoms:

  • E20 displayed on control panel
  • Appliance may stop normal operation or enter fault mode
  • Possible cooling performance issues if controls are disrupted

Possible Causes

  • Communication failure between the main control board and the display control module (medium)
  • Loose or damaged wiring/connectors between control modules (medium)

How to Fix Error E20

DIY Fix Reset power and check basic connections

  1. Unplug the refrigerator or switch off at the breaker for 5–10 minutes.
  2. Reconnect power and see if the E20 code clears.
  3. Ensure the power plug and outlet connection are secure.

Technician Only Inspect and repair communication wiring and control boards

  1. Disconnect refrigerator power.
  2. Access control compartment and inspect wire harnesses between the main control board and display control module for damage or loose connections.
  3. Repair or replace damaged wiring/connectors.
  4. Replace main control board or display module if diagnostic testing indicates module failure.

Parts needed: Wire harness connectors, Main control board, Display control module

🛑 When to Call a Pro:
  • If the error persists after power reset and basic checks, stop further troubleshooting and contact Bosch service.
  • If wiring or electronic modules are suspected faulty.

Technical Specifications

wattage 20W
component Evaporator Fan Motor
resistance 30-50 ohms
part_number Bosch 00430119
voltage_rating 120V AC

Common Questions

What does E20 error mean on Bosch refrigerator?

E20 indicates a communication failure between the main control board and the display control module, affecting normal operation.

Can I fix Bosch refrigerator E20 error myself?

Yes, you can try resetting the power and checking basic connections before seeking professional help.

How much does it cost to fix E20 error?

Repair costs range from ¥15,000 to ¥60,000+, depending on parts and labor.

When should I call a technician for E20?

You should contact Bosch service if the error persists after basic checks or if wiring issues are suspected.

Sources & References

Data last verified: 2026-01-16

User Comments (0)

Share your experience or solution below.

Be the first to comment!