Powertrain Definition only Lights the check engine lamp

P2D30: Cold Start Turbocharger/Supercharger A Overboost

Standardized SAE J2012 code · P2Dxx codes

What does P2D30 mean?

During cold start, turbocharger/supercharger A produces boost pressure above the cold-start target. Wastegate sticking closed or boost control overshoot.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Symptoms

Check engine light on
Significant power loss / limp mode
Possible blue or black smoke from exhaust
Whistling or hissing sound from intake

Common causes

High Wastegate sticking closed at cold
Medium Boost control overshoot at cold

Likelihood is a general estimate across vehicles; your make and model may differ.

Add your car to see reports of P2D30 on the same make and model first.

P2D30 in the community

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Describe your P2D30 problem

At a glance

System: Powertrain
Repair difficulty: Medium · Workshop recommended
Typical labour: 1–6 h
Typical cost: €200–€1,500
Emissions-related: Yes — may fail an emissions test
Limp mode: Possible — power may be reduced
After the repair: A drive cycle is needed before the monitor reports ready

Components involved

Turbocharger a
Wastegate a

Reading this code

Any generic OBD-II scanner reads standardized P2 codes from the engine module.

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Sources

Only the standardized definition is available so far.

Data: OBDex (CC0), revision 3eca5de.