What to check first
Can I keep using it?
Do not keep using the appliance while this warning is active.
Do not keep using the appliance if the code points to voltage, wiring, control power, burning smell, smoke, or a possible miswired supply.
- Safe next step
- Use only safe owner-level power checks, then involve a qualified technician or electrician when the source points to wiring or supply voltage.
- Stop when
- Breakers trip, lights dim, the appliance smells hot, wiring may be miswired, or the warning returns after a safe reset.
Safety boundaries
Safe first
- Match the exact brand, appliance type, and displayed code first.
- Use the model manual as the final authority for access steps.
- Stop and address visible water before retrying the appliance.
- Disconnect power before any service-access step.
Do not do this
- Do not keep running the appliance while this code is active.
- Do not bypass locks, float switches, leak sensors, or other safety systems.
Common causes include
- Heat-pump internal heater fault/error
- Fault reported within the heat-pump heating system
- Persistent heat-pump internal-heater error
Basic checks
- Switch off the dishwasher, close the water tap, and leave internal diagnosis to Bosch service.
- Note whether the display says E09 or F09 and record the complete code before contacting support.
- Locate the dishwasher model number before calling; Bosch asks for it to identify the appropriate support path.
- If the model's Bosch guidance permits it, reset power at the breaker for 30 seconds once.
- If E09 returns after that reset, stop retries and arrange service instead of cycling the heating system.
- Do not remove panels, reach heat-pump wiring, or try a component test to identify the fault.
Reset or retry steps
- Bosch US advises a 30-second breaker reset for E09; if it does not clear, contact support.
- Bosch directs unresolved E09 to support, so repeated resets are not a replacement for service.
When to call a technician
- Call Bosch support if E09 remains after one allowed 30-second power reset.
- Arrange qualified service when the display shows E09 or F09; Bosch regional guidance says not to resolve it at home.
- Give the model number and full displayed code so service can use model-specific documentation.
Before approving a paid visit, check warranty status and reviewquestions to ask before repair.
FAQ
What does Bosch Dishwasher code E09 usually mean?
Bosch documents dishwasher E09 as a heat-pump internal-heater fault/error. Model context matters: Bosch US labels E09 a heat-pump internal-heater fault/error and calls for a 30-second breaker reset, then support if it is not resolved.
Can I keep using the dishwasher with code E09?
Do not keep using the appliance until the visible issue has been checked and the relevant safety warnings have been addressed. Switch off the appliance and close the water tap before arranging service for E09 or F09.
When should I call a technician for Bosch E09?
Call Bosch support if E09 remains after one allowed 30-second power reset. A qualified technician may check Heat pump, Internal heater, and Heat-pump heating circuit against the model's service information before treating any part as failed.