Boost pressure is below the expected level. Applies only to forced-induction variants.
SYMPTOMS
- Check-engine light
- Reduced power
- Hesitation
LIKELY CAUSES
- Boost leak
- Wastegate/actuator fault
- Faulty boost sensor
- Diverter valve fault
DIAGNOSIS STEPS
- Pressure-test the charge system
- Check wastegate/actuator operation
- Compare commanded vs actual boost
RELATED PARTS
- Turbocharger
- Boost sensor