Bosch · Dishwasher
Bosch Dishwasher E10 Error Code
Zeolite chamber heater fault
What this error means
E10 indicates a Zeolite (CrystalDry) chamber heater fault—the heater that regenerates the zeolite material for efficient drying did not reach target temperature. Premium Bosch models show E10 during or after the dry phase when dishes remain wet.
How E10 is detected
When E10 appears on a Bosch dishwasher, the control board has confirmed that water did not leave the machine within the programmed drain window. On Bosch SHPM88Z75N, Bosch SHX878ZD5N, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.
Most E10 calls are resolved without parts: reset breaker thirty seconds per bosch guidance. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.
After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If E10 returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.
Common causes
- Open zeolite chamber heater element
- Heat pump module relay not powering the chamber heater
- Thermal fuse opened in the dry module from prior overheating
- Control board dry-phase timer fault
Step-by-step fixes
- 1Reset breaker thirty seconds per Bosch guidance
- 2Run a Normal wash without CrystalDry to confirm wash functions still work
- 3Ensure incoming water is hot by running the kitchen tap first
- 4Avoid Sanitize plus CrystalDry combinations until E10 clears
When to call a technician
E10 after reset requires zeolite module or heat-pump assembly service— not a filter or hose fix.
Affected models
- Bosch SHPM88Z75N
- Bosch SHX878ZD5N
- Bosch SHEM78WH5N
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use dishwashers to prevent E10 from lint and food debris buildup.
- Record when E10 appears in the cycle and whether it clears after a 60-second power reset on your Bosch dishwasher—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for E10; Bosch uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting E10; reversed plugs on pumps and valves cause immediate repeat faults.