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Shimano error codes
W010
Medium
Drive Unit Temperature High
Shimano · Drive unit temperature is high and assist may be limited.
W011
Medium
Speed Not Detected
Shimano · Wheel speed was not detected correctly.
W013
Medium
Torque Sensor Initialization
Shimano · Torque sensor failed to initialize correctly at power-on.
W020
Medium
Battery Temperature Warning
Shimano · Battery temperature is outside the normal range.
W032
Low
Di2 / Shifting Unit Warning
Shimano · Electronic shifting system communication is abnormal.
E010
High
System Error
Shimano · Drive unit detected a system fault.
E012
High
Torque Sensor Error
Shimano · Torque sensor value is abnormal.
E014
Medium
Speed Sensor Error
Shimano · Speed signal is missing or invalid.
E020
High
Battery Communication Error
Shimano · Battery and drive unit communication failed.
E030
Medium
Setting / Configuration Error
Shimano · System configuration is inconsistent.