Bosch Oven E2 error code
E2 means the oven overheated beyond its safe limit — a runaway temperature condition. On pro-style ranges it can also mean the control lost its calibration. Either way, the oven shuts heat off to protect itself.
Also shown as: E2, E:2
Last updated: October 6, 2026
What causes the E2 error?
- Failed oven temperature sensor under-reporting heat
- Stuck bake or broil relay keeping the element on
- Control board not calibrated (pro-style ranges)
- Shorted sensor wiring
- Failed cooling fan letting the cavity overheat
How to fix Bosch E2 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Turn the oven off and let it cool
Turn the selector to OFF and let the oven cool completely. Do not open the door repeatedly — it lets heat hit the control area. The code often clears once the temperature drops.Safety warning: Never force the door if it has locked. Let it cool and release on its own. - Power reset after cool-down
Once cool, turn the breaker off for one minute, then on. Try a low Bake setting and watch whether the oven regulates normally. - Check if it actually overheated
Set the oven to 350°F, wait, then carefully open the door. If it feels far hotter than 350°F (intense blast of heat), the sensor or a stuck relay is the cause — stop using it.Safety warning: Use an oven thermometer rather than your hand if you have one. Do not touch interior surfaces. - Test the temperature sensor (technician)
A technician can test the sensor resistance — about 1,080 ohms at room temperature on these models. A bad sensor or a welded-shut relay needs replacement.Safety warning: Relay and sensor testing involves live-voltage work. Call a technician.
When to call a technician
- The oven overheats again after cooling
- You smell burning or see smoke
- The sensor or relays need testing
- The oven is under warranty
Frequently asked questions
The oven got extremely hot before E2 appeared. Is that normal?
That is the runaway the code is warning about. Stop using the oven until the sensor and relays are checked — an overheating oven is a fire risk.
Can E2 clear by itself?
It clears when the temperature drops below the runaway threshold with the selector off. But the underlying fault usually returns, so get it checked.
What does 'control not calibrated' mean?
On some pro-style ranges, E2 means the control lost its temperature calibration data. A technician recalibrates or replaces the control.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.