What does code P0B23 mean?

Q: What does code P0B23 mean?

Hybrid/EV Battery A Voltage. P0B23 indicates that the hybrid or electric vehicle battery control module has detected an abnormal voltage condition in the high-voltage battery pack designated as 'A'. The computer compares the measured pack voltage against expected values and sets this code when the reading falls outside the acceptable range, which can point to a failing cell, a sensor error, or a wiring problem.

DTC codes / P0Bxx · Hybrid propulsion / P0B23

P0B23Hybrid/EV Battery A Voltage

P0B23 indicates that the hybrid or electric vehicle battery control module has detected an abnormal voltage condition in the high-voltage battery pack designated as 'A'. The computer compares the measured pack voltage against expected values and sets this code when the reading falls outside the acceptable range, which can point to a failing cell, a sensor error, or a wiring problem.

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.