P2263: Turbocharger/Supercharger A Boost System Performance — what it means, the affected system and what to check before replacing parts.
Meaning, symptoms, causes and checks
Turbocharger/Supercharger A Boost System Performance. Basic catalogue definition; diagnostic details have not yet been reviewed.
Affected system: Powertrain
Symptoms
- The engine warning light may accompany weak acceleration or reduced power.
- A boost-control fault can sometimes trigger a limited-power mode.
Possible causes
- Air leaks or loose joints in intake and intercooler pipes may reduce actual boost.
- A faulty boost sensor, sticking turbocharger actuator or mechanical turbocharger problem can disrupt pressure control.
What to check
- Confirm P2263 and look for related engine codes.
- Inspect intake and intercooler pipes, clamps and connections for leaks.
- Compare commanded and measured boost under the vehicle manufacturer's test procedure, then inspect relevant actuators and sensors before replacing parts.
Also written as: P2263-00, P226300 (some scan tools add the fault-type byte, e.g. -00).