P2564 — Turbocharger boost sensor signal is too low
The engine's computer sees a weaker than expected signal from the turbo boost control sensor. This sensor helps regulate turbo pressure for proper engine performance.
Common causes
The cause is almost always one of a few things. Here they are — P2564 rarely comes from anything outside this list:
- Faulty turbocharger boost control position sensor
- Damaged or corroded wiring/connectors in sensor circuit
- Failed turbocharger actuator or control valve
- ECU or sensor ground issues
- Vacuum leaks affecting turbo actuator operation
Where to start
In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:
- Inspect and repair wiring and connectors for damage or corrosion
- Test and replace the turbo boost control position sensor if faulty
- Check and fix vacuum lines or actuator operation
- Verify ECU grounds and sensor circuit integrity
- Replace turbocharger actuator or related components if needed
That is what holds for P2564 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.
Why TorqFix for your car?
Above is what the code means and why it appears. TorqFix goes further — it gives you specific procedures, torque values, wiring diagrams and pinouts for your exact engine, not generic steps for every car. Real workshop data (127,000+ diagrams, 10,000+ procedures), interpreted by AI in your language.
Free with an account: 4 questions per day · drawings are Pro. Signing up takes twenty seconds and needs no card.
Code breakdown
🔧 Related repair procedures
- AUDI: Removing and installing front exhaust pipe (right-side) with catalytic converter - vehicles with multitronic gearbox
- AUDI: Checking Lambda probe and Lambda control before catalytic converter
- AUDI: Removing and installing front exhaust pipe (left-side) with starter catalytic converter and main catalytic converter (vehicles with automatic gearbox)
- AUDI: Removing and installing starter catalytic converter
- AUDI: Removing and installing front exhaust pipe (left-side) with starter catalytic converter and main catalytic converter (vehicles with manual gearbox)
- AUDI: Removing and installing front exhaust pipe (right-side) with starter catalytic converter and main catalytic converter (vehicles with automatic gearbox)
- VW: Removing and installing catalytic converters
- VW: Removing and installing starter catalytic converter
- VW: Checking Lambda probe and Lambda control before catalytic converter
- AUDI: Removing and installing front exhaust pipe with catalytic converter
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
The same code can mean different things on different makes. Match the meaning to your make before acting on it.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →