P2565
Turbocharger Boost Control Position Sensor A Circuit High
Turbocharger / boost control
Generic OBD-II
Medium
What it means
P2565 means the ECM sees an abnormally high voltage from the 'A' turbocharger boost control position sensor, which reports where the variable-geometry or wastegate actuator is set. Without a trustworthy position signal the ECM cannot control boost accurately, so it usually cuts power or enters limp mode. The cause is typically the sensor wiring, a connector, or the actuator itself rather than the turbo.
Medium
Can I keep driving? Reduced — expect a power loss or limp mode; you can usually drive gently to a shop, but boost control is compromised.
Common symptoms
What you'll notice
- Check-engine light on
- Loss of power or limp mode
- Overboost or underboost, or poor acceleration
- On diesels, possible black smoke under load
Common causes
Most likely first
- Open circuit or short-to-voltage in the boost control position sensor wiringLikely
- Corroded or loose connector at the turbo actuatorCommon
- Failed position sensor inside the VGT/wastegate actuatorCommon
- Sticking or seized boost control actuatorLess often
- Faulty ECM (least common)Less often
How to diagnose & fix
Work through it in order
- Scan and read freeze-frame data to capture the fault conditions.
- Inspect the actuator position-sensor connector and wiring for opens or a short to power.
- Check the sensor's reference and signal voltage at the connector.
- Verify the boost control actuator moves freely through its range.
- Replace the actuator/sensor if it fails testing; consider the ECM last.
FAQ
Quick answers
Is it safe to drive with P2565?+
Short trips at reduced power are usually okay, but the ECM cannot control boost accurately, so avoid hard acceleration. Have it repaired to protect the turbo and restore power.
Can I just clear P2565?+
You can, but a wiring fault or failed actuator sensor will set it again and limp mode will return. Diagnose the circuit and actuator first.
Related codes
Often seen with P2565
Read & clear P2565 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX