C05B8: The brake booster motor A position sensor power supply has a broken or
The brake booster motor A position sensor power supply has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
| Code | C05B8 |
|---|---|
| System | Chassis |
| Group | C05xx, Chassis |
| Type | Generic: it means the same on every make |
How to read and clear C05B8 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 C05B8 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
- C05B4 The brake booster temperature sensor C gives a higher signal than normal
- C05B5 The brake booster temperature sensor C has a broken or disconnected wire
- C05B6 The brake booster temperature sensor C gives readings outside the normal range
- C05B7 The brake booster temperature sensor C fails now and then
- C05B9 The brake booster motor A position sensor power supply gives a lower signal
- C05BA The brake booster motor A position sensor power supply gives a higher signal
- 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
What does code C05B8 mean?
The brake booster motor A position sensor power supply has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
How do you clear C05B8?
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, C05B8 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.
