P023D OBD II Trouble Code Manifold Absolute Pressure - Turbocharger/Supercharger Boost Sensor A Correlation

How to quickly diagnose, repair, and what causes of a P023D code which indicates a correlation problem between the MAP and turbo/SC boost A sensor.

Symptoms of P023D OBD II Trouble Code

  • Decreased engine performance
  • Excessive rich or lean exhaust
  • Delayed engine start-up (especially when cold)
  • Diminished fuel efficiency

Common Causes of P023D OBD II Trouble Code

  • Defective MAP/ turbocharger/supercharger boost sensor A
  • Open or shorted MAP/ turbocharger/supercharger boost sensor A wiring or connector
  • Engine failure (insufficient vacuum production)
  • Restricted intercooler
  • PCM or PCM programming error

Severity of P023D OBD II Trouble Code

Overall engine performance and fuel efficiency may be adversely affected by the conditions which contribute to a code P023D. It should be categorized as severe.