Code result
P2B7F
Turbocharger/Supercharger Boost Control Module A Calibration Not Learned/Programmed
High severity
What it means
The boost control module A reports that its calibration data is not present or not learned. Boost regulation falls back to default values until programming or adaptation completes.
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
Module replaced without programming
highOne of the most commonly reported causes for this code — check this first.
Calibration memory corrupted after voltage drop
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 P2B7F freeNo credit card required