VERIFIED
E01 directs attention to the heat-pump motor control circuit on supported Bosch dishwashers. Save the full E-Nr and code before troubleshooting.
On supported Bosch dishwashers, E01 is associated with heat-pump motor circuit fault at the main control board. That description identifies the system path the control is concerned about; it does not, by itself, tell you which component to replace.
What E01 narrows down
The technical anchor for this record is heat-pump motor circuit fault at the main control board. Keep that meaning tied to the exact dishwasher platform. The code identifies a condition detected by the control system, while the full model number and the behavior immediately before the warning help determine the actual repair path.
What you may observe
- the program may stop before completion
- normal wash functions may become unavailable
- the warning can return soon after power is restored
- the controls may behave differently from normal
What may be behind the warning
- a fault in the main-board circuit that drives or monitors the heat-pump motor
- a switching or relay problem in that control path
- a wiring or connected-load condition detected by the control
Checks that stay on the safe side
- Save a photo of E01 and the complete E-Nr/model label before clearing the display.
- If there is no smoke, burning odor, visible damage, or repeated breaker trip, use one normal power reset only where Bosch documentation permits it.
- Keep the control module closed; internal wiring and board testing are not homeowner checks.
When to stop
Leave the dishwasher off if there is smoke, a hot electrical smell, sparking, visible damage, or another breaker trip.
If the code returns
If E01 returns after the permitted reset, the next step is model-specific testing of the heat-pump motor control path, its connections, and the main electronics. The code narrows the circuit but does not identify a replaceable part by itself.
Model note
Use the complete Bosch E-Nr/model number from the rating label. Do not assume that another Bosch dishwasher with the same exterior design uses the same internal components or diagnostic sequence.
FAQ
Not normally. The verified meaning points to the heat-pump motor control circuit at the main board, so routine loading changes do not explain a returning E01.
No. One documented reset may help rule out a temporary control state, but repeated resets do not repair an electrical control fault.
No. The board is part of the diagnostic path, but wiring and the controlled load also have to be checked on the exact model.
Provide the complete E-Nr, the exact E01 display, when it appears in the cycle, and whether the code returned after the permitted reset.
Bosch dishwasher service in San Francisco
Still seeing E01 on your Bosch dishwasher?
If the warning remains active or comes back after the appropriate safe checks, request Bosch dishwasher diagnosis in the San Francisco Bay Area. Include the full E-Nr, the exact code, what the dishwasher was doing when it appeared, and your service ZIP code.
Model compatibility: Bosch reuses codes across series and model years, so E01 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.