C056D: The brake pedal position sensor power supply voltage is below normal
The brake pedal position sensor power supply voltage is below normal. It may be the sensor itself, its connector or the wiring.
| Code | C056D |
|---|---|
| System | Chassis |
| Group | C05xx, Chassis |
| Type | Generic: it means the same on every make |
How to read and clear C056D 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 C056D 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
- C0569 The brake booster solenoid gives readings outside the normal range
- C056A The brake booster pressure sensor power supply has an electrical fault
- C056B The brake pressure sensor A fails now and then
- C056C The brake pressure sensor B fails now and then
- C056E The brake pedal position sensor power supply voltage is above normal
- C056F The brake booster travel sensor gives a lower signal than normal
- C0570 The brake booster travel sensor gives a higher signal than normal
- C0571 The brake pressure sensor C gives a lower signal than normal
What does code C056D mean?
The brake pedal position sensor power supply voltage is below normal. It may be the sensor itself, its connector or the wiring.
How do you clear C056D?
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, C056D 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.
