Bosch Dishwasher E01 — Control board fault
Bosch Dishwasher · Error code E01
What E01 Means
The main electronic control module has detected an internal fault and cannot complete the wash program. Often paired with a no-response or random reset condition.
Most Likely Fix
Heater relay / control board fault
Tools: screwdriver, nut driver, multimeter
Diagnose first: Control board cannot verify heater circuit; often the relay on the board itself has failed.
Find this part on Amazon →If the primary fix doesn't resolve it:
Symptoms
- Cycle stops mid-program
- Dishwasher resets itself
- Display freezes or blanks
- Buttons unresponsive
Common Causes
PCB internal fault, often after power surge or moisture intrusion under the lid.
Water from a leaking door seal reached the upper control board.
Unstable house voltage tripping the brownout watchdog.
Loose or corroded connector between PCB and user interface.
How to Fix It
- Hard reset: switch off at the breaker for 5 minutes, then restore power.
- Open the door top and inspect the control module area for moisture or staining.
- Re-seat the ribbon cable between the user interface and main PCB.
- Run a Rinse-only program to see if the fault returns.
- If E01 persists, the main control module typically requires replacement (Bosch part number specific to model).
Parts You May Need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More Bosch Dishwasher Codes
Verified against manufacturer documentation: bosch-home.com
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.