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.

Real-world scan data

Seen in

289

scans in the past year

Found in

0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of P2565 scans

P0645in 21.1% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

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.

Read & clear P2565 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX