Jura Error 2: sensor open or machine too cold
Error 2 means: Coffee temperature sensor interrupted, or the machine is too cold to heat.
How to fix Error 2
- Bring the machine to room temperature. Jura owners use a hair dryer on low into the water-tank cavity for five minutes, or fill the tank with warm (not hot) water, then restart.
- If Error 2 clears after warming, nothing is broken; keep the machine somewhere warmer.
- If it persists warm, the sensor circuit is open. Inside, check the NTC plug and the two thermal-fuse cords on the coffee thermoblock; a blown fuse cord reads open on a meter.
- Replace the NTC and fuse cords together; also check the power board relay if the fuse blew because the thermoblock was overdriven.
When to stop and call a repairer
A fuse cord that has blown once will blow again if the power board is latching the heater on. If the new one fails within days, the power board is the fault.
What it costs
Parts: Genuine Jura NTC sensor about $25 to $40; thermal-fuse cord set $15 to $30; a thermoblock $90 to $180.
Service: Out-of-warranty manufacturer service for a super-automatic is typically $250 to $500 including return shipping; independent espresso repairers are usually cheaper for a single part.
Worth repairing? Yes. Warming costs nothing; the parts are under $50.
FAQ
What does Error 2 mean on the Jura?
Coffee temperature sensor interrupted, or the machine is too cold to heat. Error 2 is the most common Jura code and it has a benign cause and a real one. Benign: the machine is below about 10 C (delivered in winter, kept in a cold room) and the heater is locked out until it warms. Real: the coffee thermoblock sensor or the thermal-fuse cords have gone open circuit.
Can I fix Error 2 myself?
DIY difficulty: moderate. Bring the machine to room temperature. Jura owners use a hair dryer on low into the water-tank cavity for five minutes, or fill the tank with warm (not hot) water, then restart. If Error 2 clears after warming, nothing is broken; keep the machine somewhere warmer.
How much does it cost to fix Error 2?
Genuine Jura NTC sensor about $25 to $40; thermal-fuse cord set $15 to $30; a thermoblock $90 to $180. Out-of-warranty manufacturer service for a super-automatic is typically $250 to $500 including return shipping; independent espresso repairers are usually cheaper for a single part.
Is it worth repairing?
Yes. Warming costs nothing; the parts are under $50.
Code meanings are compiled from manufacturer service references and repair documentation for the all models; fixes follow documented repairs and owner reports. Model revisions can differ. If your appliance is under warranty, contact the manufacturer before opening it.