P056F: The cold start turbocharger boost control B gives readings outside the normal
The cold start turbocharger boost control B gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
| Code | P056F |
|---|---|
| System | Engine and transmission |
| Group | P05xx, Speed, idle and auxiliary inputs |
| Type | Generic: it means the same on every make |
How to read and clear P056F 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 P056F 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
- P056B The cruise control signal for reducing distance is faulty
- P056C There is a fault in the cruise control cancellation signal
- P056D There is a fault in the AdBlue control unit system voltage
- P056E The cold start turbocharger boost control A gives readings outside the normal
- P0570 The accelerator pedal position sensor signal used by cruise control is faulty
- P0571 Cruise control brake switch A: circuit fault
- P0572 The cruise control or brake switch A circuit signal is electrically too low
- P0573 The cruise control or brake switch A circuit signal is electrically too high
- P0500 Vehicle speed sensor malfunction
- P0501 Vehicle speed sensor range/performance
- P0502 Vehicle speed sensor circuit low input
- P0503 Vehicle speed sensor intermittent, erratic or high
What does code P056F mean?
The cold start turbocharger boost control B gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
How do you clear P056F?
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, P056F 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.
