LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Diagnostic Methods (Hybrid) >> Adaptive Fuel Diagnostic Trouble Code (DTCs) Diagnostic Techniques >> P0172 System Too Rich Diagnostic Aids

P0172 System Too Rich Diagnostic Aids

NOTE: If the system is rich at certain conditions, then the LONGFT PID is negative value at that airflow, indicating that decreased fuel is needed.

System rich concerns are usually caused by fuel system concerns, although the MAF sensor, and base engine (for example, engine oil contaminated with fuel) should also be checked.

scientia non olet · About LEMON Manuals