Turbocharger/Supercharger Boost Control Module B Calibration Not Learned/Programmed
The boost control module B reports that its calibration data is not present or not learned. Boost regulation falls back to default values until programming or adaptation completes.
Affected components
- Boost control module b
- Ecm
Common causes
- High likelihood: Module replaced without programming
- Medium likelihood: Calibration memory corrupted after voltage drop
Possible symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.