What it means
Supply voltage to boost control actuator A below expected range. Same as P005E but on actuator A. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
- The engine or gearbox may go into limp mode
How it works
Boost control actuator A helps the control module regulate turbocharger or supercharger boost, often by moving a wastegate or variable vanes. P006E sets when the supply voltage monitored for actuator A falls below the expected range, which may result from a blown fuse, high resistance at a connector, or damaged wiring.
Common causes
Most likely first.
- Supply fuse blown or relay failed
- Connector pins corroded - high contact resistance
- Harness chafing through insulation
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Save freeze-frame data and scan for related boost actuator or power supply codes before clearing anything.
- Inspect actuator A's connector and harness for corrosion, loose pins, chafing, or damage.
- Check the relevant fuse and relay using the vehicle's wiring information, since a failed supply can leave actuator A underpowered.
- Measure supply and ground at actuator A while the circuit is operating, and compare results with the manufacturer's specification.
- If supply wiring checks out, test actuator A and its control circuit according to the manufacturer's procedure.
Common fixes
- Replace a blown boost actuator supply fuse after checking for the cause.
- Clean and secure corroded or loose actuator A connector terminals.
- Repair chafed or open wiring in actuator A's supply circuit.
- Replace a failed relay or actuator A if testing confirms the fault.
Can I keep driving?
Avoid hard acceleration, towing, and high engine loads because boost may be limited or inconsistent. Arrange diagnosis soon; continued driving with poor boost control can reduce power and may worsen related turbocharger or engine problems.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.