Editorial & technical review
- Written by ApplianceWorth Editorial Team
- Technically reviewed by Victor — appliance technician
- Last reviewed 2026-07-01
- Applies to Bosch dishwashers
- Confidence medium
- Also displayed as E1
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
What this code means
The dishwasher has detected an internal power-module or pump-control problem. The cycle may stop or end before completion.
Most likely causes
- A loose electrical connection to a pump or power module
- Unstable supply voltage or a poor terminal connection
- An internal power-module failure
- A pump circuit drawing abnormal current
Safe checks for the owner
- Turn the dishwasher off at the breaker for five minutes and retry once.
- Stop using it if the breaker trips, wiring smells hot or the control repeatedly resets.
- Do not open the base or test energized connectors.
Estimated U.S. repair cost
$320–$750, depending on model, access, parts availability and local labor.