Bosch Dishwasher E20 Error: Drain Pump Motor Repair

The Bosch E20 error code signals a drain pump motor failure. Your dishwasher can't remove water from the tub, resulting in standing water and incomplete cycles.

Drain Pump Motor Function

The drain pump actively pumps water out of the dishwasher during drain phases and continuously during errors to prevent flooding. The E20 error appears when the pump motor has failed electrically, is mechanically jammed, or the control board detects excessive current indicating pump problems. You may hear humming, clicking, or complete silence when drainage should occur.

Replacement Process

• Step 1: Manually remove standing water with a cup, sponge, or wet vacuum before beginning repairs.
• Step 2: Disconnect power at the circuit breaker. Never work on pump motors with power connected.
• Step 3: Remove the dishwasher's kickplate and lower access panel. You'll need to pull the unit out slightly for full access.
• Step 4: Locate the drain pump—typically at the bottom left or center. It's a circular or oval motor housing with drain hose connections.
• Step 5: Check the pump for visible damage or debris. Look inside the pump inlet for foreign objects that could jam the impeller.
• Step 6: Disconnect the electrical connector and drain hoses from the pump. Have towels ready—residual water will spill from hoses.
• Step 7: Remove mounting screws or clips securing the pump. Carefully extract the pump assembly from its housing.
• Step 8: Install the new drain pump by reversing removal steps. Ensure all hose connections are secure and electrical connections are firm.

After installation, restore power and run a drain test cycle. The pump should operate smoothly and remove water completely. The E20 error should clear once drainage functions normally. Drain pump replacement costs $80-150 but is essential—without it, your dishwasher is completely non-functional. Keep the filter clean and avoid washing items that could break and enter the drain pump to extend pump life.

Bottom Line: Bosch Dishwasher E20 Error: Drain Pump Motor Repair does not have to be complicated. Follow the step-by-step approach outlined above and you will be set for success.

Related guides: Error Code 8 4 , Dishwasher Error Ftd , Dishwasher Error I10 , Dishwasher Error I20

Related guides: Dishwasher Error I30 , Dishwasher Error C1 , Dishwasher Error C2 , Dishwasher Error C3

Related guides: Dishwasher Error C4 , Dishwasher Error C6 , Dishwasher Error C7 , Dishwasher Error C8

Share this guide:

Frequently Asked Questions about Bosch Dishwasher E20 Error: Drain Pump Motor Repair