What does code P226B mean?

DTC codes / P22xx · Fuel and air metering (injector circuits) / P226B

P226BTurbocharger/Supercharger A Boost Pressure Too High - Mechanical

P226B means the engine computer has detected that the turbocharger or supercharger boost pressure is higher than the commanded value, and it has classified the fault as mechanical rather than electrical. The forced-induction system is making more pressure than the computer asked for, and the computer suspects a stuck or failed mechanical component rather than a wiring problem.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaFuel and air metering (injector circuits)

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.