Bosch · Dryer
Bosch Dryer E14 Error Code
Ambient room temperature too low to run
What this error means
E14 means ambient temperature is outside the operating window—heat-pump Bosch dryers often require roughly 41°F (5°C) minimum at the installation location. Cold garages and unheated mudrooms trigger E14 at startup because the heat pump cannot extract moisture efficiently.
How E14 is detected
When E14 appears on a Bosch dryer, the control board has confirmed that water did not leave the machine within the programmed drain window. On Bosch WQB245B0UC, Bosch WQB245AXUC, 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 E14 calls are resolved without parts: raise room temperature or relocate drying to a heated space temporarily. 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 E14 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
- Dryer installed in an unheated garage below minimum ambient temp
- Cold snap dropping laundry room temperature overnight
- Heat pump refrigerant pressure too low in extreme cold
- Faulty ambient sensor reading colder than actual room temp
Step-by-step fixes
- 1Raise room temperature or relocate drying to a heated space temporarily
- 2Wait until indoor temperature rises above the manual minimum before restarting
- 3Close garage doors and run a small heater in the utility area if safe and permitted
- 4Retry on a timed program once the room has warmed for an hour
When to call a technician
E14 in a heated room above 50°F suggests ambient sensor or heat-pump board fault—not an environmental limit.
Affected models
- Bosch WQB245B0UC
- Bosch WQB245AXUC
- Bosch WTG865H4UC
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use dryers to prevent E14 from lint and food debris buildup.
- Record when E14 appears in the cycle and whether it clears after a 60-second power reset on your Bosch dryer—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for E14; Bosch uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting E14; reversed plugs on pumps and valves cause immediate repeat faults.