Bosch 800 series Service Manual page 33

58300000202443_ARA_EN_C
Error Code Description
E005
Communication error
E305
E009
ROM-check error in user interface
E309
E010
Data memory error in user
E310 interface
Continuous pushing of a single key
E011
(E411 internal error reported as
E011)
Defective control module
E312
temperature sensor
E314
Cancel / Off key error
E414
Continuous pushing of multiple
E032 keys
(E432 internal error reported as
E032.)
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JANUARY 2018
Cause/Notes
E005: Loss of communication between user
interface and control module.
E305: Loss of communication between TCM
and control module or TCM and user interface.
ROM-check performed at reset fails. All
heating elements disabled. Error will be
cancelled at start-up if next ROM-check
succeeds.
Cyclic check of memory content or a write to
memory failed. All heating elements will be
disabled. Error will be cancelled at start-up.
Key pressed continually for 10 seconds, or
touchpad assembly has a bad key. Heating will
be stopped and will resume when key is no
longer pressed.
All oven operations suspended until control
reset
Oven operation will be stopped. Error
cancelled only by a system reset.
Two or more keys continuously pressed for 10
seconds or touch pad assembly has more than
one bad key. Key actions are suspended and
heating is paused. Error will clear and normal
operation will resume when no touch pads are
depressed.
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Service Manual for Bosch 800 Series Built-in Wall Ovens
Suggested Action(s)
Check for damaged (cut or pinched) wires

or loose connectors.
Confirm that voltage is getting to the

correct pins on the board.
E009: Replace user interface

E309: Replace control module

E010: Replace user interface

E310: Replace control module

Confirm touch panel is clean and free of

moisture, oils or other contaminants.
Inspect user interface PCB.

Check door seal to verify vapor/moisture is

not causing key activation; replace seal if
necessary. Run Key Test in Service mode; if
it fails, replace front panel assembly.
Replace control module
Check touch pad assembly.

Inspect user interface PCB.

Confirm touch panel is clean and free of

moisture, oils or other contaminants.
Inspect user interface PCB.

Check door seal to verify vapor/moisture is

not causing key activation; replace seal if
necessary. Run Key Test in Service mode; if
it fails, replace front panel assembly.
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800 944-2904