Powertrain
generic / SAE
P2B7F
Turbocharger/Supercharger Boost Control Module A Calibration Not Learned/Programmed
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / 7F
Possible causes
- Module replaced without programming high
- Calibration memory corrupted after voltage drop medium
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 50–400 €
- Estimated time: 0.5–2 h
- Component: boost control module a
- Component: ecm
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012