e118
Moderate
Bosch · Ovens & Ranges
Communication error between display and control board
Quick Answer
Error code E118 on your Bosch Ovens & Ranges means: Communication error between display and control board. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Turn off the oven at the circuit breaker.
2
Uninstall the oven and remove the top panel to access wiring.
3
Ensure that the wiring between the display board and relay board is secure.
4
Inspect for any burnt or damaged wires.
5
Check the cooling fan for proper operation.
6
If the cooling fan is burned out, replace both the control module and cooling fan (Bosch service kit available).
7
Reset the high-temperature cutout (HTC) near the door latch.
8
Reassemble and test the oven.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Display board
Cooling fan
Control module service kit
Wiring harness
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