Drain pump relay error — drain pump electrical circuit malfunction
The E23 error on the Bosch WAJ24060IN indicates drain pump relay error — drain pump electrical circuit malfunction. This typically occurs due to drain pump relay on the control board failed. A qualified technician can usually diagnose this in 15–20 min (diagnosis only), but the steps below will help you understand the issue.
Safety Warning
This is a high-severity error. Unplug the appliance immediately and assess the situation before attempting any repair.
Safety Warning
This repair is recommended for certified technicians only. The diagnostic steps below can help you understand the issue before calling for service.
Common Causes of E23
- 1Drain pump relay on the control board failed
- 2Wiring harness fault between control board and drain pump
- 3Drain pump motor short circuit
- 4Damaged control board causing pump circuit failure
How to Fix E23
- 1
Step 1
Switch the washer off and disconnect it from power
- 2
Step 2
Clean the pump filter as a first step — sometimes pump overload due to clogging mimics a relay error
- 3
Step 3
Unplug the washer for 10 minutes to allow the control board relay to reset
- 4
Step 4
Plug in and attempt a drain cycle to see if the error clears
- 5
Step 5
If the error persists after filter cleaning and reset, a technician needs to test the pump wiring and control board relay
Tools Needed
When to Call a Technician
Error returns after power reset and pump filter is confirmed clear — control board relay or wiring harness needs professional diagnosis
Frequently Asked Questions
Common questions about Bosch E23 error
E18 is a general drainage failure that you can usually fix by cleaning the pump filter. E23 is more specific — it points to a fault in the electrical relay on the main control board that powers the pump motor. A filter clean and power reset are still worth trying as a first step, but E23 typically means a technician needs to test the board or wiring.
Sometimes. If the pump relay has failed due to a wiring fault rather than a board defect, replacing the wiring harness is a less expensive fix. A technician can use a multimeter to test continuity in the pump circuit and determine whether the relay, the wiring, or the pump motor itself is at fault.
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