What does code P0B4C mean?

Q: What does code P0B4C mean?

Hybrid/EV Battery Voltage Sense D Circuit Low. P0B4C indicates that the hybrid or electric vehicle battery pack's voltage sensing circuit D is reporting a voltage that is lower than expected, which the battery energy control module interprets as a fault. The computer has detected an abnormally low signal on the dedicated sense line for one specific cell group or module, and it stores this code to alert the driver that the high-voltage battery monitoring system is not receiving reliable data.

DTC codes / P0Bxx · Hybrid propulsion / P0B4C

P0B4CHybrid/EV Battery Voltage Sense D Circuit Low

P0B4C indicates that the hybrid or electric vehicle battery pack's voltage sensing circuit D is reporting a voltage that is lower than expected, which the battery energy control module interprets as a fault. The computer has detected an abnormally low signal on the dedicated sense line for one specific cell group or module, and it stores this code to alert the driver that the high-voltage battery monitoring system is not receiving reliable data.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

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.