Powertrain
generic / SAE
P2D2F
Cold Start Turbocharger/Supercharger A Underboost
During cold start, turbocharger/supercharger A does not produce the expected boost pressure. Cold lubricant, lazy wastegate, or turbine spool-up delayed.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 2F
Possible causes
- Cold lubricant slows turbine spool-up high
- Wastegate response sluggish medium
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–6 h
- Component: turbocharger a
- Component: wastegate a
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012