P2263 Turbocharger/Supercharger Boost System Performance

P2263 means the forced-induction system is not producing the boost the module expects — actual manifold pressure falls short of, or drifts from, the commanded target across the operating range.

Code details

Generic OBD-II · P2

System: Fuel / Air
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace the turbocharger before pressure-testing the charge system, because a split hose or loose clamp mimics a failing turbo.

Symptoms of P2263

Noticeable loss of power, especially under load.
Check-engine light, sometimes with a limp mode.
A whistle or hiss from a boost leak.

Common causes of P2263

A boost/charge-pipe leak or failed intercooler.
A stuck or leaking wastegate or its actuator.
A faulty boost-control solenoid or vacuum line.
A worn turbocharger.

Useful checks before replacing parts

Check for boost leaks in charge pipes, intercooler, and clamps.
Compare commanded versus actual boost with a scan tool.
Inspect the wastegate, actuator, and boost-control solenoid operation.

Related OBD-II codes

These nearby fuel / air entries can help compare wording and pin down the fault area.