Open or damaged wire in the boost control solenoid supply circuit (e.g., broken wire, corroded connector).; Short to ground in the supply circuit, possibly due to chafed insulation or moisture intrusion.; Faulty boost control solenoid (internal short or open coil).; Poor electrical connection at the solenoid or ECM connector (loose pins, corrosion).; Failed ECM driver for the boost control circuit (rare but possible).; Blown fuse or relay supplying power to the boost control solenoid (if applicable).; Aftermarket accessories or modifications tapping into the circuit and causing voltage drop.

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P006E

P006ETurbocharger/Supercharger Boost Control A Supply Voltage Circuit Low

P006E means the engine control module (ECM) has detected a low voltage condition on the supply circuit for the 'A' turbocharger or supercharger boost control solenoid. The ECM monitors the voltage on the control circuit and sets this code when the signal falls below the expected threshold, indicating an open circuit, short to ground, or a faulty solenoid.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Illumination of the check engine light (CEL) on the dashboard.
Often no symptoms besides the warning light, especially if the boost control solenoid defaults to a safe position.
Reduced engine performance or power, particularly during acceleration.
The engine may enter limp mode, limiting boost and RPM.
Poor fuel economy or unusual transmission shift patterns.
In some cases, a noticeable lack of turbocharger or supercharger boost.

Common causes, most likely first

Open or damaged wire in the boost control solenoid supply circuit (e.g., broken wire, corroded connector).
Short to ground in the supply circuit, possibly due to chafed insulation or moisture intrusion.
Faulty boost control solenoid (internal short or open coil).
Poor electrical connection at the solenoid or ECM connector (loose pins, corrosion).
Failed ECM driver for the boost control circuit (rare but possible).
Blown fuse or relay supplying power to the boost control solenoid (if applicable).
Aftermarket accessories or modifications tapping into the circuit and causing voltage drop.

How to diagnose and fix it

Verify the code with a scan tool and check for any related codes (e.g., P006D, P006F) to confirm the circuit fault.
Inspect the boost control solenoid connector and wiring for damage, corrosion, or loose pins; repair as needed.
Check the supply voltage at the solenoid connector with the key on, engine off; compare to battery voltage to identify an open circuit.
Test the solenoid resistance with a multimeter and compare to manufacturer specifications; replace if out of range.
Check for continuity and short to ground in the supply wire between the solenoid and ECM; repair any wiring faults.
If the circuit and solenoid test good, suspect the ECM; perform a thorough diagnostic before replacement.
Clear the code and test-drive the vehicle to verify the repair and ensure the code does not return.

Don't overlook the boost control solenoid

A low voltage code on the boost control circuit is often caused by a simple wiring issue, such as a broken wire near the turbocharger where heat and vibration are common.
The boost control solenoid may still function mechanically but have an electrical fault that only appears under certain conditions, so a resistance test alone may not be conclusive.
This code can be set by a faulty ground connection for the solenoid, even if the power side of the circuit appears intact.
Some vehicles use a PWM signal to control the solenoid; a low voltage code can be triggered by a shorted solenoid coil that draws excessive current and pulls the voltage down.
After replacing a solenoid, always clear adaptive learning values and perform a relearn procedure if required by the manufacturer to avoid drivability issues.

Can I keep driving with P006E?

You can usually drive the vehicle with this code, but expect reduced engine performance and possible limp mode. Avoid heavy acceleration or towing until the fault is repaired, as the turbocharger or supercharger may not provide full boost, which can affect safety in merging or passing situations.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.