Bafang M420 G332, CAN-BUS, mid motor controller, 250W, e-bike spare part

The Bafang M420 G332 V2.2 CAN-BUS Mid Motor Controller is the original replacement electronic control unit for the Bafang M420 mid drive motor (model: M420 MM G332.250.C). If your motor shows error codes (e.g. Err30, Err53, communication failure) or stops responding to the display, a faulty controller is often the cause — replacing it restores full motor function without buying a complete motor.

This controller uses the CAN-BUS communication protocol and is compatible with Bafang CAN-BUS displays such as DPC11, DPC18 and C18. It operates at 36V / 43V with a rated output of 250W, matching the original M420 G332 specifications.

Compatible with:

• Bafang M420 (G332) mid drive motor
• Motor model: M420 MM G332.250.C
• CAN-BUS display systems (not compatible with UART)

Note: Please verify your motor model and protocol (UART vs CAN-BUS) before ordering. M420 motors exist in both UART and CAN-BUS versions — this controller is for CAN-BUS only.