P0B30: The voltage of hybrid battery D is unstable
The voltage of hybrid battery D is unstable. Check the battery, its connector and wiring.
| Code | P0B30 |
|---|---|
| System | Engine and transmission |
| Group | P0Bxx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0B30 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0B30 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P0B2C The voltage of hybrid battery C is unstable
- P0B2D The hybrid battery C voltage is below normal
- P0B2E The hybrid battery C voltage is above normal
- P0B2F There is a fault in the hybrid battery D voltage
- P0B31 The hybrid battery D voltage is below normal
- P0B32 The hybrid battery D voltage is above normal
- P0B33 Fault in the high-voltage service disconnect circuit
- P0B34 The hybrid battery isolator circuit is not working correctly
What does code P0B30 mean?
The voltage of hybrid battery D is unstable. Check the battery, its connector and wiring.
How do you clear P0B30?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P0B30 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
