C0581: The brake booster motor A phase U V W gives a higher signal than normal
The brake booster motor A phase U V W gives a higher signal than normal. It is usually the part, its wiring or a connector with poor contact.
| Code | C0581 |
|---|---|
| System | Chassis |
| Group | C05xx, Chassis |
| Type | Generic: it means the same on every make |
How to read and clear C0581 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 C0581 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
- C057C The brake booster temperature sensor B gives readings outside the normal range
- C057D The brake booster temperature sensor circuit B fails now and then
- C057F The brake booster motor A phase U V W has a broken or disconnected wire
- C0580 The brake booster motor A phase U V W gives a lower signal than normal
- C0582 The brake booster motor A phase U V W gives readings outside the normal range
- C0583 The brake booster motor B phase U V W has a broken or disconnected wire
- C0584 The brake booster motor B phase U V W gives a lower signal than normal
- C0585 The brake booster motor B phase U V W gives a higher signal than normal
What does code C0581 mean?
The brake booster motor A phase U V W gives a higher signal than normal. It is usually the part, its wiring or a connector with poor contact.
How do you clear C0581?
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, C0581 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.
