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.