Product: Electric PAS Hall Sensor (middle drive motor) — compatible with BAFANG O1D9 / motor BBS02B Why you need this sensor Restores reliable pedal-assist: replaces a failing PAS Hall sensor to bring back smooth, responsive pedal assistance from the mid-drive motor. Prevents system faults: ensures correct hall-effect signals to the controller and support sensor module, reducing error codes, hesitation, and unexpected motor cutouts. Saves time and cost: a direct parts replacement that avoids lengthy diagnostics or unnecessary motor replacement. Key benefits and how it solves problems Precise pedal detection: provides accurate Hall sensor feedback to the motor controller so the PAS system responds as intended when you pedal. Compatible replacement for BAFANG O1D9: designed to match the original part so installation and electrical connections align with the BAFANG ecosystem. Supports sensor module and controller operation: maintains proper communication between the PAS module and the mid-drive controller for consistent performance. Minimizes downtime: straightforward replacement helps get the e-bike back on the road quickly. Important attributes Function: Electric PAS Hall sensor for middle drive motors; provides pedal-assist (PAS) signal to the motor controller. Compatibility: Suitable for BAFANG O1D9 parts replacement and specifically designed for the BAFANG BBS02B motor. Fitment approach: Intended as a like-for-like replacement to restore original PAS functionality without changing system design. Performance: Delivers the Hall sensor signal required for correct operation of the support sensor module and controller (consistent PAS behavior). Typical use scenarios Replace a worn or damaged PAS Hall sensor on a BAFANG BBS02B-equipped e-bike to restore pedal-assist performance. Service or maintain a fleet of BAFANG mid-drive bikes by stocking compatible O1D9 replacement parts to reduce repair turnaround. Repair hobby or workshop projects using BAFANG BBS02B motors where original PAS functionality must be preserved. Notes for buyers Confirm compatibility with your specific BAFANG model (O1D9 / BBS02B) before purchase. This part is intended as a replacement PAS Hall sensor to ensure proper functioning with the existing sensor module and controller.