P023D Fault Code

P023D OBD-II Trouble Code Short Description

Manifold Absolute Pressure - Turbocharger/Supercharger Boost Sensor A Correlation

What does trouble code P023D mean?

The P023D fault code indicates a problem with the correlation between the manifold absolute pressure sensor and the turbocharger or supercharger boost sensor in the engine. This means that there is a discrepancy between the readings of the two sensors, which can cause issues with the engine's performance and efficiency.

The most common causes of this fault code include a faulty turbocharger or supercharger boost sensor, a leak in the intake system, or a malfunctioning manifold absolute pressure sensor. To fix the issue, the faulty sensor or leak must be identified and replaced or repaired.

It is important to address this fault code promptly, as it can lead to further damage to the engine if left unresolved. If you are unsure how to fix the issue yourself, it is recommended to seek the help of a professional mechanic.


What are the symptoms of the P023D code?

Some possible symptoms of the P023D fault code on cars are:

  • Check engine light (CEL) or malfunction indicator lamp (MIL) illuminates
  • Reduced engine performance or power
  • Turbocharger or supercharger failure
  • Engine hesitation or stalling
  • Rough idle or poor acceleration
  • Lack of boost pressure or inconsistent boost pressure
  • Poor fuel economy or increased fuel consumption
  • Abnormal exhaust emissions or smell

Note that the symptoms may vary depending on the make, model, and year of the car, as well as the severity and frequency of the fault. It is recommended to diagnose and repair the issue promptly to avoid further damage or safety concerns.


What causes the P023D code?

The P023D fault code indicates a discrepancy in the readings between the Manifold Absolute Pressure (MAP) sensor and the turbocharger or supercharger boost sensor. This may be caused by a malfunctioning sensor, a wiring issue, or a problem with the engine control module (ECM). Other possible causes include a boost leak in the intake system, a faulty wastegate, or a malfunctioning turbocharger or supercharger. It is recommended to have a professional diagnose and address this issue to prevent any further damage to the engine or drivetrain.

Possible Solutions

How to fix P023D?

The P023D fault code usually indicates a problem with the turbocharger or supercharger boost sensor and its relationship to the manifold absolute pressure sensor. Here are some potential fixes:

  1. Check for damaged or disconnected wiring and connectors related to the boost sensor and manifold pressure sensor.
  2. Inspect the boost sensor and the pressure sensor for any signs of physical damage or malfunction, and replace them if necessary.
  3. Perform a thorough inspection of the turbocharger or supercharger system, including the wastegate, to ensure everything is functioning properly.
  4. Check the engine vacuum system for leaks, which can cause problems with the manifold absolute pressure sensor.
  5. Use a diagnostic tool to reset the code and clear any stored faults.

If the problem persists, it is recommended to consult a mechanic for further diagnosis and repair.