Bosch Oven E100 — What It Means & How to Fix It
E100 is the range's general electronics-fault message. Run the documented five-minute breaker reset once — persistent E100 belongs to a technician.
What this code means
E100 is Bosch's catch-all electronics fault on freestanding ranges — the control system flagging a hardware problem it isn't narrowing further for you. Bosch's official instruction is the timed breaker reset: off at the circuit breaker, five minutes, back on, retest. That clears transient electronics faults; a code that returns on the retest means the electronics themselves need diagnostics.
Bosch's freestanding-ranges page documents E100 as an electronics fault with this exact reset. Since it's a general flag, don't chase parts — the reset first, then a technician with live diagnostics.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Transient electronics fault (power event) | Common | Yes — 5-minute breaker reset |
| Failing control board | Occasional | No — technician job |
| Power supply or connection issue to the electronics | Occasional | Partly — outlet check by electrician |
| Sensor or actuator fault cascading into a general error | Less common | No — technician job |
What you can try yourself
- Switch the range off at the circuit breaker.
- Wait five minutes.
- Switch the breaker back on and test the controls and heating modes.
- If E100 returns, leave the range off for the service visit — repeated error cycles stress the board.
- Give the technician a timeline: when E100 appeared and what you were doing.
When to call a technician
- E100 returns within minutes of the reset.
- The range partially responds — some functions work, others are dead.
- Any burning smell or breaker tripping with the code.
Typical professional repair cost: The reset is free. General electronics faults are diagnosed by a technician with live readings — board replacement is the common outcome, quoted by your service partner.
Frequently asked questions
What actually fails when a range throws E100?
It's a general flag, so the honest answer is 'whatever the board can't pin down for you.' The timed reset separates a transient spike from a hardware fault — that reachable, cost-free test is the whole point of the code being general.
Is it worth resetting more than once?
Bosch's procedure is one documented reset. If the code survives the five-minute reset, repeated resets are just symptom management — book the diagnostic.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Bosch codes
- Bosch Oven E11 E11 is the touch-control code — the panel read something it didn't expect, and condensation on a cold panel is the classic trigger. Dry it, power-cycle, retry.
- Bosch Oven e005 e005 is a communication fault between the range's user interface and its power board. The five-minute breaker reset is the documented first step.
- Bosch Oven e011 e011 is the touch-sensor fault on the oven control panel. Bosch's path: clean and dry the panel, breaker off five minutes, then test.
- Bosch Oven e101 e101 is the temperature-sensor fault — the oven's probe isn't reading correctly. Bosch's steps: verify the power cord connection, then run the five-minute reset.
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