OBD-II code · Powertrain (generic)
P023D Manifold Absolute Pressure - Turbocharger/Supercharger Boost Sensor A Correlation
Manifold absolute pressure and boost sensor A readings disagree beyond plausible deviation. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Is it safe to drive with P023D?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOne sensor drifted
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
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Map Sensor, Boost Pressure Sensor
Related codes
- P023EManifold Absolute Pressure - Turbocharger/Supercharger Boost Sensor B Correlation
- P023ACharge Air Cooler Coolant Pump A Control Circuit/Open
- P023BCharge Air Cooler Coolant Pump A Control Circuit Low
- P023CCharge Air Cooler Coolant Pump A Control Circuit High
- P023FFuel Pump Secondary Circuit/Open
- P0240Turbocharger/Supercharger Boost Sensor B Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.