Bosch Dishwasher E08 Error Code — What It Means
The E08 error code on a Bosch dishwasher indicates that the water level is too low, or water is not being pumped correctly. This is a low-water fault that prevents the machine from completing its cycle because it cannot maintain the required water level for normal washing and heating operation. The fault can stem from problems getting water into the machine, moving water through the system, or sensing the water level accurately.
Common Causes
- Restricted inlet water supply A kinked or damaged inlet hose, closed shut-off valve, or insufficient water flow into the machine prevents adequate fill.
- Clogged filter or sump debris Food particles, debris, or buildup in the filter basket or sump area block water circulation and trigger the low-level sensor.
- Circulation pump failure The pump that moves water through the spray arms and heating circuit is not moving water correctly, even when fill volume is adequate.
- Water-level sensing fault A malfunctioning float switch or water-level sensor sends incorrect signals to the control board, reporting low water when the tub is full.
- Heating element low-water interlock On some models the heater shuts down and throws E08 if water level drops below the safe heating threshold during a cycle.
Step-by-Step Fix
- {‘lead’: ‘Reset power at the breaker’, ‘text’: ‘Turn off the circuit breaker feeding the dishwasher for 30 seconds, then restore power and see if the fault clears on the next start.’}
- {‘lead’: ‘Confirm water supply is open and adequate’, ‘text’: ‘Check that the shut-off valve under the sink is fully open, the inlet hose is not kinked or damaged, and water flows freely when you disconnect the inlet line.’}
- {‘lead’: ‘Remove and clean the filter assembly’, ‘text’: ‘Pull out the lower dish rack, twist-remove the cylindrical filter in the tub floor, rinse it under running water with mild soap and a soft brush, and reinstall it securely.’}
- {‘lead’: ‘Inspect the sump and spray-arm area’, ‘text’: ‘Look for any debris, broken glass, or foreign objects in the sump well and around the lower spray-arm hub that could block water movement.’}
- {‘lead’: ‘Test a short wash cycle’, ‘text’: ‘Run a rinse or light-wash program and listen for normal fill and pump sounds to confirm water is entering and circulating through the machine.’}
- {‘lead’: ‘Check circulation pump function’, ‘text’: ‘If fill is normal but the code persists, access the lower front panel and verify the circulation pump spins freely and its wiring connections are tight and dry.’}
- {‘lead’: ‘Call for service if the fault remains’, ‘text’: ‘If the error returns after supply, filter, and reset checks, the float switch, inlet valve, or pump assembly likely needs professional diagnosis and replacement.’}
Parts Often Needed
| Part | Notes |
|---|---|
| Dishwasher inlet hose | Amazon | Replace if kinked, cracked, or restricted. |
| Bosch dishwasher circulation pump assembly | Amazon | Needed when water fills but does not pump through the spray arms. |
| Dishwasher filter assembly | Amazon | Order if the existing filter is cracked or damaged during cleaning. |
| Water inlet valve | Amazon | Replace if the machine does not fill to the correct level despite open supply. |
When to Call a Pro
Call a professional if the E08 code persists after you have verified open water supply, cleaned the filter, and reset power. Internal faults in the circulation pump, water-level sensor, or heater circuit require access to the lower machine compartment, electrical testing with a multimeter, and part replacement under the tub. A qualified Bosch service technician has model-specific diagnostic procedures and access to OEM parts that match your exact dishwasher series.