The control module detected that the Hybrid Battery "D" voltage stayed below the expected range.
TuningBot DTC Database · v4.37.15
P0B31 Hybrid Battery "D" Voltage Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P0B31 means
Related and nearby codes
How to read P0B31
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P0B31
What does P0B31 mean?
Hybrid Battery "D" Voltage Low. The control module detected that the Hybrid Battery "D" voltage stayed below the expected range.
Is P0B31 generic or manufacturer-specific?
P0B31 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0B31 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
