OBD-II code · Powertrain (generic, extended)
P2CD8 Turbocharger/Supercharger Boost Sensor D Circuit Low
The ECM detects a circuit low fault on the turbocharger/supercharger boost sensor d circuit. Reading cannot be used reliably for control.
Is it safe to drive with P2CD8?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2 h
- Emissions test
- Likely to fail
- Parts involved
- Turbo Boost Sensor D, Wiring Harness, Ecm
Related codes
- P2CD5Turbocharger/Supercharger Bypass Valve C Stuck
- P2CD6Turbocharger/Supercharger Boost Sensor D Circuit
- P2CD7Turbocharger/Supercharger Boost Sensor D Circuit Range/Performance
- P2CD9Turbocharger/Supercharger Boost Sensor D Circuit High
- P2CDAAlternative Fuel Tank A Vacuum Insulation Deteriorated
- P2CDBCold Start Cylinder 1 Deactivation/Intake Valve Control Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.