P0109 OBD II Trouble Code Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

Symptoms of P0109 OBD II Trouble Code

  • Hesitation on acceleration
  • General lack of engine performance
  • Diminished fuel efficiency
  • Black smoke from exhaust
  • Excessively rich fuel exhaust fumes

Common Causes of P0109 OBD II Trouble Code

  • Defective MAP sensor
  • Open or shorted wiring for the MAP sensor and/or the BPS
  • Faulty BPS
  • Corroded connector face at the MAP/BPS sensor
  • Defective PCM or PCM programming error

Severity of P0109 OBD II Trouble Code

Since the conditions that cause a P0109 to be stored will likely lead to very poor fuel efficiency and engine drivability issues, this code should be addressed urgently.