AAMCO Socal

AAMCO Centers of Southern California


AAMCO Socal

AAMCO Centers of Southern California

Top Reasons Your Check Engine Light May Be On:

  • A problem with the Mass Air Flow (MAF) sensor or circuit.
  • System Running Too Lean. An oxygen sensor detected a lean condition (too much oxygen in the exhaust).
  • System Running Too Rich: The oxygen sensor detected a rich condition (or a too-high fuel to oxygen ratio).
  • Cylinder Misfire: Random or multiple misfires in your engine.
  • Knock Sensor Circuit Malfunction
  • Insufficient EGR (Exhaust Gas Recirculation) Flow
  • Catalyst System Efficiency below Threshold

At AAMCO Socal centers, our technicians understand the reasons why your check engine light might be on, they’ll quickly pin-point what is causing the problem and will recommend only what needs repair.