The PCM has detected that the engine idle speed is lower than the pre-programmed RPM.
- Vacuum leak
- Air is restricted in the exhaust or intake air path
- Defective positive crankcase ventilation valve
- Problem with throttle body
- Failed PCM
- Check for vacuum leaks, damages and restriction
- Note that this code is informational more than anything, so look out for other codes that it comes with and address them first