P006F — Turbocharger/Supercharger Boost Control "A" Supply Voltage Circuit High

OBD2 code P006F flags a problem with the turbocharger / supercharger boost control (turbocharger/supercharger boost control "A" supply voltage circuit high). Short, gentle driving to a shop is usually possible. Common culprits: stuck wastegate or faulty boost control solenoid, vacuum or actuator line damage, faulty boost pressure sensor.

powertrain (engine/transmission)

Is it safe to drive?

Caution - diagnose the boost-control circuit promptly P006F can make turbo boost inconsistent and may reduce engine performance. Short trips may be possible if boost remains stable, but avoid sustained high-load driving until the circuit is repaired, especially if boost surges, overboost occurs, or the check-engine light returns.

Typical symptoms

The check-engine light illuminates and the scanner stores P006F.
Turbocharger boost response is delayed, weaker than expected, or inconsistent.
The engine may hesitate or produce less power when boost fails to develop normally.
Boost pressure may fluctuate or surge during acceleration.
P006F may appear intermittently when the vehicle is cold or when the wiring is disturbed.
Some operating conditions may produce excessive boost if the boost-control actuator is commanded incorrectly.

Common causes

An open or high-resistance section of the boost control "A" supply wire can allow the circuit's pull-up voltage to rise above the expected range.
A short to battery voltage in the boost-control actuator or solenoid supply circuit can trigger P006F.
A turbocharger boost-control solenoid or actuator with an internal winding or terminal fault can report excessive supply voltage.
Corroded terminals, damaged insulation, or a poor connector can create an intermittent high-voltage condition in the boost control circuit.
A defective powertrain control module boost driver or voltage-reference component can falsely identify the P006F condition.
A high-resistance or corroded actuator ground can distort the measured boost-control supply voltage.

How to diagnose with an OBD scanner

Read P006F and related data Connect an ELM327 adapter and use AIScanAuto or another OBD scanner to confirm P006F, review freeze-frame data, and check for related powertrain or boost-control codes. If supported, compare commanded boost with actual boost data.
Inspect the boost-control circuit Locate the turbocharger boost control "A" solenoid or actuator. Examine its connector, terminals, wiring harness, splices, and nearby components for corrosion, heat damage, pin movement, chafing, or a short to battery voltage.
Measure supply voltage accurately With the ignition on and the engine off, back-probe the boost control "A" supply and ground terminals at the actuator connector. Compare the readings with the manufacturer service specification; do not assume battery voltage is the correct operating value.
Perform an isolation test If the supply voltage is too high, disconnect the actuator and repeat the measurement at the harness side. With power removed, isolate the connector and check for continuity to battery or ground. A voltage change after disconnecting the actuator points to the component or its internal wiring.
Repair and verify P006F Repair the damaged terminal, splice, shorted wire, or defective boost-control actuator as testing indicates. Clear the code, then verify boost control under acceleration and confirm that P006F does not return.

Approximate repair cost

A typical independent-shop estimate is USD $180–$900 for diagnosis and a wiring or boost-control solenoid repair, depending on component accessibility and whether the powertrain control module is involved. These figures are estimates and vary by region.

Common questions

What does code P006F specifically identify?

P006F identifies an abnormally high voltage in the turbocharger or supercharger boost control "A" supply circuit, generally involving the control solenoid, actuator, wiring, connector, or control-module driver.

Can I continue driving with P006F?

You can cautiously drive to a repair facility if boost stays normal and no warning conditions occur, but delayed boost, surging, overboost, or reduced power warrants stopping the vehicle and arranging prompt diagnosis.

What is the most common cause of P006F?

A damaged connector, shorted supply wire, or defective boost-control solenoid is common. An open circuit can also create a false high reading when the control module applies a pull-up voltage.

Does P006F require the turbocharger to be replaced?

Not necessarily. Testing the boost control "A" wiring, connector, actuator, and control-module output first can identify the actual fault and may limit the repair to wiring or a solenoid.

When your engine control module decides something is wrong with the turbo or supercharger system, it often stores a code called P006F. This particular code points specifically to the boost control "A" supply voltage circuit reading abnormally high — essentially, the voltage on that circuit is sitting closer to battery power than it should be. The powertrain control module expects a specific operating range from this circuit; when it detects a reading that exceeds that range, it flags the fault and illuminates the check engine light.

Think of the boost control system as the brain of your turbo or supercharger. A supply voltage circuit feeds power to the components that manage boost pressure — the solenoid valves, actuators, and sensors that tell the turbo how much air to force into the engine. When everything is working correctly, this circuit carries a controlled voltage. When P006F triggers, something has caused that voltage to climb too high, typically near full battery voltage. This usually means a short to a power source somewhere in the wiring, a failed component pulling the circuit high, or a broken ground connection that leaves the signal floating at power voltage.

The ECU doesn't set P006F from a single bad reading. It watches the condition occur repeatedly under specific driving situations before activating the warning light. The freeze frame data stored alongside the code is valuable — it records engine load, RPM, temperature, and vehicle speed at the moment the fault was detected. That snapshot tells you exactly what conditions to replicate during testing.

Common Symptoms of P006F

Vehicle enters reduced-power limp-home mode
Noticeable increase in engine oil consumption
Check Engine Light remains illuminated
Unusual whistling or siren-like sound from the engine compartment
Black smoke billowing from the exhaust under acceleration
Substantial loss of engine power and responsiveness

What Causes P006F?

The most frequent culprits behind code P006F, ordered from most to least common:

Signal wire in the boost control circuit shorted directly to battery positive voltage
Faulty turbocharger or supercharger boost control component pulling the signal line high
Open ground return circuit for the boost control "A" supply voltage
Stuck or binding wastegate mechanism, or failed boost control solenoid
Damaged vacuum lines or actuator hoses supplying the turbo system
Boost leak somewhere in the intercooler piping, couplings, or clamps
Restricted intake airflow or clogged exhaust components such as the DPF or catalytic converter

How to Diagnose P006F

Follow these practical steps to isolate the root cause:

Plug in an OBD2 scanner, retrieve code P006F, and record all freeze frame data — this information shows the exact engine operating conditions when the failure occurred.
Review any additional stored codes for patterns. Also search for manufacturer technical service bulletins (TSB) specific to your vehicle — some P006F faults have known factory solutions or require software updates.
Perform a thorough visual inspection of the wiring harness and electrical connectors tied to the turbo boost control system, looking for damaged insulation, corrosion, loose pins, or chafed wires.
With the boost control component disconnected, probe the signal wire at the harness side with a multimeter. A high voltage reading with the component unplugged confirms a short to power in the harness itself; if the voltage drops to normal range, the component has failed internally.
Pressurize the intake tract and listen for escaping air — cracked intercooler hoses and loose clamps are the most common source of boost leaks.
Use the scanner to command the boost control solenoid while observing the wastegate or variable geometry turbo mechanism for proper movement and response.
Clear the code, complete a drive cycle that reproduces the freeze frame conditions, and verify P006F does not reappear.

Repair Options for P006F

Address the least expensive possibilities before replacing major assemblies:

Turbocharger replacement — $1,200–$3,500
Replace boost control solenoid or actuator — $200–$600
Repair boost leak including hoses, clamps, or intercooler — $100–$400

Total Repair Cost for P006F

The final bill hinges entirely on which part has failed. Based on typical independent shop labor rates in the United States, expect to pay anywhere from $100 for a simple hose replacement up to $3,500 for a complete turbocharger swap. A boost control solenoid or actuator falls in the $200–$600 range. The key is accurate diagnosis before purchasing parts — the turbo itself is rarely the culprit, yet it is the most expensive component to replace.

Can You Drive with P006F?

Caution is the right approach here. Operate the vehicle gently and avoid demanding boost-heavy acceleration. The engine will likely run in limp mode with severely diminished power. Ignoring a boost control fault risks engine overheating and catastrophic turbo failure — a repair that far exceeds the cost of fixing the underlying issue that triggered P006F in the first place.