E16
Bosch Oven
Severity:What Does This Error Mean?
E16 on a Bosch oven means the oven temperature is rising faster than expected — the heating element is not switching off when it should. This points to a faulty temperature sensor, a stuck relay on the control board, or a shorted heating element. The oven shuts down for safety.
Affected Models
- Bosch HBG Series
- Bosch HBA Series
- Bosch Series 4, 6 and 8 Built-In Ovens
- Bosch HBN Series
Common Causes
- Oven temperature sensor (NTC) faulty — sending a lower temperature reading than actual, causing the heater to stay on
- Relay on the control board stuck closed — heater receiving power continuously
- Heating element partially shorted — drawing more heat than the set temperature requires
- Control board fault — not cutting power to the element at the correct temperature
How to Fix It
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Switch the oven off at the wall immediately.
Do not continue using the oven with E16. An oven that overheats can damage cabinets and in rare cases cause a fire.
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Allow the oven to cool completely, then try a power reset.
Switch off at the wall for 30 minutes. If E16 clears and does not return on first use, monitor carefully. If E16 returns, do not use the oven.
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Call a Bosch technician to test the temperature sensor and control board.
The technician will measure the oven sensor resistance and check the heater relay. Both are straightforward tests with a multimeter.
When to Call a Professional
E16 is a safety fault — do not attempt to use the oven until it is repaired. A stuck relay or failed temperature sensor can cause the oven to reach dangerous temperatures. Call a Bosch-authorised technician.
Frequently Asked Questions
What is the difference between E03 and E16 on a Bosch oven?
E03 means the oven reached a temperature higher than its safety limit — a temperature event. E16 means the oven is heating faster than the control board expects — a rate-of-rise fault. Both are overtemperature-related, but E16 often catches the problem earlier, before the limit is reached.
Is E16 dangerous?
Yes — E16 indicates uncontrolled heating, which is a safety risk. The oven is designed to shut down when E16 is detected, but do not try to reset and continue using the oven until it has been inspected by a technician.