P2199 OBD II Trouble Code Intake Air Temperature Sensor 1/2 Correlation

How to easily diagnose, repair, and info on causes of a P2199 trouble code that indicates a detected correlation problem between the A and B inputs of the cruise control multifunction input.

Symptoms of P2199 OBD II Trouble Code

  • Diminished engine performance
  • Reduced fuel efficiency
  • Hesitation upon acceleration

Common Causes of P2199 OBD II Trouble Code

  • IAT sensor disconnected
  • Defective IAT sensor
  • Restricted air filter
  • Open or shorted circuits or connectors
  • Defective PCM or PCM programming error

Severity of P2199 OBD II Trouble Code

IAT sensor input is critical to fuel delivery and ignition timing. A stored code P2199 should be treated as severe.