Check Engine Light Troubleshooting

A flashing check engine light is typically indicative of a serious problem affecting your vehicle's ignition, fuel or emission systems. Our auto service professionals will investigate the check engine code error and troubleshoot the problem. If you delay a car diagnostic or necessary engine repair, the problems and costs can quickly escalate.

When you bring your car to Automotive Technology of West Islip, our experienced technicians will perform on-board diagnostics and determine why your check engine light (service engine soon) is on or flashing. While it's impossible to say exactly why a check engine light is on or flashing without being able to examine the vehicle and perform a car diagnostic, possible causes of a steady or flashing check engine light can include:

  • Failing oxygen sensor
  • A loose gas cap
  • Bad spark plug/ignition coil
  • Bad spark plug wires
  • A problem with your catalytic converter
  • Bad mass air flow sensor
  • Engine vacuum leak
  • EGR valve problem
  • Excessive gas consumption or release of air pollutants

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