Excessive Time To Enter Closed Loop Turbocharger B Boost Control
Same condition as the turbo A excessive-warm-up fault, applied to the second turbo. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Affected components
- Turbo actuator b
Common causes
- High likelihood: Carbonised VGT vanes
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
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.