58300000202181 ARA EN B January 2017 Service Manual for Bosch 500 Series Built-in Wall Ovens
Page 27 of 41
Copyright by BSH Home Appliances Corporation 1901 Main St ▪ Suite 600 ▪ Irvine, CA 92614 800 944-2904
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7 TROUBLESHOOTING
The information in this section will be helpful when troubleshooting, diagnosing, and resolving faults and other issues affecting the normal operation
of the oven.
7.1 Error Codes
A Service Guide/Wire Diagram that includes error code information is available in
QuickFinder and is also packed with every oven. Find it on the underside of the upper
plenum access panel as shown in Figure 37.
Additional error code information and suggested repair actions can be found in the
following table. Note that error codes which begin with E1 apply specifically to the
single/upper oven cavity, and those which begin with E2 apply specifically to the lower
oven cavity of double ovens.
Wrong module code
(E100/E400 internal errors
reported as E000)
Control module and user interface are
mismatched. No operation is possible.
Enter correct option code in Service mode.
Temperature sensor on the control module
detects temperature higher than limit value.
Control turns off heating elements and fan
defaults to high speed. When cavity
temperature lowers to 212°F/100°C, heating
will resume and error will be cleared. (If self-
clean was running, it will be disabled until a
control reset is performed.)
If cooling fan is not operating…
Check connections to the fan and the
control module (see Small Load Schematic).
If cooling fan is operating…
Check element operation
Check for air obstruction or damaged
upper/lower ventilation trims
Check for stuck relays.
E005: Loss of communication between user
interface and control module.
E305: Loss of communication between TCM
and control module or TCM and user interface.
Check for damaged (cut or pinched) wires
or loose connectors.
Confirm that voltage is getting to the
correct pins on the board.
Figure 38 Location of Service Guide on the control module access panel
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