Variable Geometry Turbo (VGT) Actuator Position Sensor Circuit
2009-2013 Audi A3 2.0L TDI
Description
The variable geometry turbo vane position sensor is reporting values outside the expected range. The VGT system uses movable vanes to optimize boost across the RPM range.
Symptoms
- Check Engine Light
- Poor low-end torque
- Excessive smoke at low RPM
- Turbo surge or flutter
- Reduced fuel economy
Common Causes
- VGT position sensor failure
- Carbon buildup on vane mechanism
- Actuator motor failure
- Corroded sensor connector
- Damaged wiring harness
Diagnostic Steps
- Read VGT position PID on scan tool
- Command VGT vanes through full range with scan tool
- Inspect VGT actuator connector
- Test position sensor voltage range
- Check for carbon restriction on vanes
Repair Notes
Replace VGT position sensor or actuator assembly. Clean carbon deposits from vane mechanism. Common on diesel vehicles.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P3006 on Other Vehicles
Common Questions
What does code P3006 mean on a 2009-2013 Audi A3?
P3006 stands for "Variable Geometry Turbo (VGT) Actuator Position Sensor Circuit". The variable geometry turbo vane position sensor is reporting values outside the expected range. The VGT system uses movable vanes to optimize boost across the RPM range.
What are the symptoms of P3006 on a Audi A3?
Common symptoms of P3006 include: Check Engine Light, Poor low-end torque, Excessive smoke at low RPM, Turbo surge or flutter, Reduced fuel economy.
What causes P3006 on a 2009-2013 Audi A3?
Common causes of P3006 include: VGT position sensor failure, Carbon buildup on vane mechanism, Actuator motor failure, Corroded sensor connector, Damaged wiring harness.