What does code P0B89 mean?

Q: What does code P0B89 mean?

Hybrid/EV Battery Voltage Sense P Circuit High. P0B89 indicates that the hybrid or electric vehicle battery pack's voltage sensing circuit for the 'P' position (often the positive or phase-specific sense line) is reporting a voltage higher than the manufacturer's expected range. The battery energy control module (BECM) or hybrid control module monitors this sense circuit and sets the code when the signal exceeds a calibrated threshold, typically due to a wiring fault, a failed sense line, or an internal module issue.

DTC codes / P0Bxx · Hybrid propulsion / P0B89

P0B89Hybrid/EV Battery Voltage Sense P Circuit High

P0B89 indicates that the hybrid or electric vehicle battery pack's voltage sensing circuit for the 'P' position (often the positive or phase-specific sense line) is reporting a voltage higher than the manufacturer's expected range. The battery energy control module (BECM) or hybrid control module monitors this sense circuit and sets the code when the signal exceeds a calibrated threshold, typically due to a wiring fault, a failed sense line, or an internal module issue.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.