Bosch · Washing Machine
Bosch Washing Machine E19 Error Code
Water did not reach target heat in time
What this error means
E19 (F19) means heating time exceeded—the NTC sensor never reported wash water reaching the programmed temperature within the allowed window. Cotton programs at 140°F are a common trigger when limescale coats the element.
How E19 is detected
When E19 appears on a Bosch washing machine, the control board has confirmed that water did not leave the machine within the programmed drain window. On Bosch WAW285H1UC, Bosch WAT28400UC, 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 E19 calls are resolved without parts: run an empty 194°f (90°c) maintenance wash with bosch descaler or citric acid. 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 E19 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
- Limescale insulating the tubular heating element
- Cold-only supply connected where hot was expected on a dual-inlet model
- Failed heating element open circuit
- NTC temperature sensor reading incorrectly low
Step-by-step fixes
- 1Run an empty 194°F (90°C) maintenance wash with Bosch descaler or citric acid
- 2Confirm the hot inlet hose is connected if your model uses separate hot fill
- 3Run hot water at the nearest sink for 30 seconds before starting the washer
- 4Avoid heavy soil programs until E19 clears on a short warm cycle
When to call a technician
If E19 returns immediately after descaling on a verified hot supply, the element or NTC needs ohm testing.
Affected models
- Bosch WAW285H1UC
- Bosch WAT28400UC
- Bosch WGA12400UC
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use washing machines to prevent E19 from lint and food debris buildup.
- Record when E19 appears in the cycle and whether it clears after a 60-second power reset on your Bosch washing machine—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for E19; Bosch uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting E19; reversed plugs on pumps and valves cause immediate repeat faults.