Code result
P0049
Turbocharger/Supercharger A Turbine Overspeed
High severity
What it means
The turbocharger A turbine speed exceeded its safe limit. Risk of bearing damage and shaft fracture. Often caused by a stuck-closed wastegate or boost control fault.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Wastegate stuck closed
highOne of the most commonly reported causes for this code — check this first.
Boost control loop fault
mediumA plausible cause — test and verify before replacing parts.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P0049 freeNo credit card required