P0B33: Fault in the high-voltage service disconnect circuit
Fault in the high-voltage service disconnect circuit.
| Code | P0B33 |
|---|---|
| System | Engine and transmission |
| Group | P0Bxx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0B33 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 P0B33 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
- P0B2F There is a fault in the hybrid battery D voltage
- P0B30 The voltage of hybrid battery D is unstable
- P0B31 The hybrid battery D voltage is below normal
- P0B32 The hybrid battery D voltage is above normal
- P0B34 The hybrid battery isolator circuit is not working correctly
- P0B35 The hybrid battery isolator circuit signal is too low
- P0B36 The hybrid battery isolator circuit signal is too high
- P0B37 The hybrid battery isolator circuit is open
What does code P0B33 mean?
Fault in the high-voltage service disconnect circuit.
How do you clear P0B33?
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, P0B33 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.
