Powertrain
Definition only
Lights the check engine lamp
P2CD9: Turbocharger/Supercharger Boost Sensor D Circuit High
Standardized SAE J2012 code · P2Cxx codes
What does P2CD9 mean?
The ECM detects a circuit high fault on the turbocharger/supercharger boost sensor d circuit. Reading cannot be used reliably for control.
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 Signal wire shorted to B+
- Medium Open sensor
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2CD9 on the same make and model first.
P2CD9 in the community
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