C05BF: The brake booster motor B position sensor power supply gives readings outside
The brake booster motor B position sensor power supply gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | C05BF |
|---|---|
| System | Chassis |
| Group | C05xx, Chassis |
| Type | Generic: it means the same on every make |
How to read and clear C05BF 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 C05BF 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
- C05BB The brake booster motor A position sensor power supply gives readings outside
- C05BC The brake booster motor B position sensor power supply has a broken or
- C05BD The brake booster motor B position sensor power supply gives a lower signal
- C05BE The brake booster motor B position sensor power supply gives a higher signal
- C05C0 The brake pedal position sensor A needs its learning procedure
- C05C1 The brake pedal position sensor B needs its learning procedure
- C05C2 The brake booster motor A is getting too hot
- C05C3 The brake booster motor A power supply has an electrical fault
What does code C05BF mean?
The brake booster motor B position sensor power supply gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear C05BF?
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, C05BF 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.
