Bosch Refrigerator Error Code 3-3-6
Ice maker
Ice maker: Crusher motor faulty.
First step from the service manual
Check crusher motor; if problematic replace motor; if OK replace icemaker.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
Get the full diagnostic procedure for 3-3-6.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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What 3-3-6 means on a Bosch refrigerator
Error code 3-3-6 on a Bosch refrigerator indicates a fault in the ice maker's crusher motor. The crusher motor is the component responsible for breaking whole ice cubes into crushed ice before dispensing. When the control board detects that the crusher motor is not operating within expected parameters, either failing to start, stalling under load, or drawing incorrect current, it logs this fault code and typically disables the ice dispenser function to prevent further damage.
The diagnostic approach follows a clear sequence: inspect the crusher motor itself first, then determine whether the motor or the entire ice maker assembly needs replacement. A faulty crusher motor can result from bearing wear that causes the motor to seize or run with excessive resistance, winding failures that prevent the motor from developing adequate torque, or a damaged drive mechanism that places too much load on the motor. In some cases, ice jams or foreign material in the crusher mechanism can stress the motor enough to trigger the fault without the motor itself being permanently damaged.
Because the crusher motor is integrated into the ice maker assembly on many Bosch models, a technician must evaluate whether the motor can be replaced independently or whether the full ice maker unit must be substituted. If the motor tests within acceptable operating parameters, the fault may originate from the ice maker control board or wiring harness rather than the motor itself, which is why the diagnostic step directs replacement of the ice maker assembly as a secondary action.
Source: manufacturer service documentation.
Common causes of 3-3-6
- 01
Worn or seized crusher motor
Part replacementOver time, the crusher motor bearings can wear out or seize, preventing the motor from spinning freely. This is the most common root cause and is identified by testing motor rotation and checking for unusual resistance or heat.
- 02
Ice jam in the crusher mechanism
Wiring / connectionA buildup of ice or a lodged piece of ice in the crusher pathway can stall the motor and trigger the fault. Inspect the crusher area for blockages and clear any obstructions before assuming the motor has failed.
- 03
Failed motor windings
Part replacementAn internal winding failure in the crusher motor can cause it to draw incorrect current or fail to generate torque. This is confirmed by testing the motor windings for continuity and proper resistance values.
- 04
Damaged wiring harness or connector
Wiring / connectionLoose, corroded, or broken wiring between the control board and the crusher motor can interrupt power or signal delivery, causing the board to register a motor fault. Visually inspect connectors and test for continuity in the harness.
- 05
Defective ice maker assembly
Part replacementIf the crusher motor tests normal but the fault persists, the ice maker assembly's internal control circuitry may be at fault. In this case, replacing the full ice maker assembly is the indicated next step.
Frequently asked questions about 3-3-6
What does 3-3-6 mean on a Bosch refrigerator?
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Will resetting my Bosch refrigerator clear the 3-3-6 error?
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