Panasonic error codes

The Side Display shows a warning icon with a code (W-M1, W-B3 …) or an error code E-00x; several faults appear as a list, such as “M2 B1 S1”. Older Panasonic displays (around 2017) show short codes like E1–EF, or “000” blinking in the speed field.

Trolda cannot read Panasonic motors yet. The code list is here to help you anyway.

Side Display – warning icon

Code	Part	What it means
W-M1 / W-M2	Motor	The motor is overloaded or too hot and gives less assist to protect itself
W-M3	Communication	The display can’t reach the drive unit
W-B1 / W-B2	Battery	The battery is overloaded or too hot, so assist is reduced
W-B3	Battery	Communication with the battery is failing
W-C1	Motor	Fault in the drive unit (motor)
W-S1	Speed sensor	The speed sensor isn’t getting a proper signal
W-U1	System	The USB socket’s protection has tripped

Side Display – other faults

Code	Part	What it means
E-001	Torque sensor	The system was switched on with a foot or weight on the pedal, or while rolling
E-003	Battery	The battery isn’t recognised as the bike’s original battery
E-005	Communication	The side display and drive unit can’t connect to each other
E-009	Motor	Fault in the drive unit (motor)
E-00E	Control unit	Fault in a key component; often the walk assist button is held in
E-00F	Software	Software fault in the drive unit
—	Display	The screen is completely white at start-up: display software fault
—	Display	The screen flashes white at start-up: display memory fault

Older displays (around 2017)

Code	Part	What it means
E1	Torque sensor	The system was switched on while someone was pedalling
E3	Battery	The battery isn’t recognised as the bike’s original battery
E5	Display	The display (console) isn’t found or accepted; the backlight blinks
E6	Torque sensor	Fault in the torque sensor that measures your pedalling
E7	Torque sensor	A more serious fault in the torque sensor that measures your pedalling
E8	Motor	Fault in the motor’s Hall sensor (tracks the motor’s rotation)
E9	Motor	Fault in the motor unit
Ec	Speed sensor	Fault in the speed sensor or its cable
EF	Software	The motor software update failed
000	Speed sensor	“000” blinks as the speed: the speed sensor has no signal and the motor gives no assist

Sources

Panasonic Operating Instructions Side display NYT1955 (2021)
Gazelle Manual with Panasonic system v17.1 (2017, published by a dealer or bike brand)

Explained in Trolda's own words from the manufacturer's public documentation. Trolda is not affiliated with the manufacturer. If in doubt, ask your dealer.

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