C05A7: The ABS pump motor power supply voltage B is below normal
The ABS pump motor power supply voltage B is below normal. It usually comes from the battery, the alternator or a poor connection.
| Code | C05A7 |
|---|---|
| System | Chassis |
| Group | C05xx, Chassis |
| Type | Generic: it means the same on every make |
How to read and clear C05A7 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 C05A7 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
- C05A3 The wheel speed sensor power supply gives a higher signal than normal
- C05A4 The wheel speed sensor power supply gives a lower signal than normal
- C05A5 The ABS pump motor power supply voltage B has a broken or disconnected wire
- C05A6 The ABS pump motor power supply voltage B is above normal
- C05A8 The ABS pump motor power supply voltage B gives readings outside the normal
- C05AA The ABS pump motor temperature is above normal
- C05AB The combined braking separation valve gives readings outside the normal range
- C05AC The combined braking separation valve has got stuck
What does code C05A7 mean?
The ABS pump motor power supply voltage B is below normal. It usually comes from the battery, the alternator or a poor connection.
How do you clear C05A7?
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, C05A7 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.
