Short to voltage or damaged wiring in the boost control supply circuit; Corroded, loose or damaged connector at the boost control actuator or solenoid; Faulty boost control actuator, wastegate or vane control with an internal fault; Charging system fault causing high system voltage, such as a failing alternator regulator; Faulty relay or fuse circuit supplying the boost control device (depends on model); Fault inside the engine control unit driver or supply circuit; Outdated control unit software where the manufacturer has issued a known fix.

P006F

Turbocharger/Supercharger Boost Control A Supply Voltage Circuit High.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
0: AreaFuel and air metering, auxiliary emission controls
6F: FaultThe specific fault in that area

What it means

P006F is a generic powertrain code meaning the supply voltage circuit for turbocharger or supercharger boost control 'A' is reading higher than expected. The engine control unit monitors the voltage feeding the boost control device, such as an electronic wastegate or variable geometry actuator, and set the code when it stayed above the permitted range. Exactly which component is on this circuit depends on the model and engine.

Symptoms

Engine warning light on
Loss of power or limp mode
Boost pressure lower or higher than expected
Turbo not building boost or erratic boost
Poor acceleration or hesitation under load
Possible other boost or actuator codes stored alongside

Possible causes

Short to voltage or damaged wiring in the boost control supply circuitlikely
Corroded, loose or damaged connector at the boost control actuator or solenoidlikely
Faulty boost control actuator, wastegate or vane control with an internal faultpossible
Charging system fault causing high system voltage, such as a failing alternator regulatorpossible
Faulty relay or fuse circuit supplying the boost control device (depends on model)possible
Fault inside the engine control unit driver or supply circuitrare
Outdated control unit software where the manufacturer has issued a known fixrare

How to diagnose

Read all stored codes and freeze frame data, noting battery voltage, engine load and speed when the code set, and check for related boost or actuator codes
Check battery and charging voltage with the engine running to rule out an overvoltage condition
Visually inspect the boost control actuator wiring and connector for chafing, heat damage, corrosion, water ingress and pushed-back pins
Check for a short to voltage on the supply wire with the connector unplugged, following the manufacturer wiring diagram for the specific model
Check the related fuse and relay and their supply and earth connections where fitted
Measure the supply voltage at the actuator connector with the ignition on and compare with the specification
Test the actuator operation and resistance against manufacturer data, and use bidirectional controls if available to command it
Check for technical service bulletins or software updates relevant to the vehicle before considering the control unit

How to fix

Repair or replace damaged wiring and clear any short to voltage in the supply circuit
Clean or replace corroded or damaged connectors and terminals
Replace the boost control actuator or solenoid if it fails electrical or operational tests
Repair the charging system if system voltage is excessive
Replace a faulty relay or correct a fuse circuit fault
Update the control unit software only if a known fault is documented, or repair or replace the control unit if confirmed faulty

Can I keep driving?

Medium severity

The car can usually be driven carefully for a short time, but it may be in limp mode with reduced power. Get it checked soon, as incorrect boost control can strain the engine and turbocharger.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.