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Connecticut Emissions Program
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General Testing Info | Test Procedures

 

General Testing Info

 

What Should I Do When the “Check Engine” Or “Service Engine Soon” Or Malfunction Indicator Lamp (MIL) Is On?

 

If your vehicle’s Malfunction Indicator Lamp (MIL) stays on while the engine is running,  it’s an indication that the On Board Diagnostic system has detected an emissions problem that has the potential to make your vehicle emit excess emission levels.  If your vehicle’s Malfunction Indicator Lamp (MIL) is blinking or flashing, this is an indication that the vehicle has a serious problem and needs immediate service or major damage could occur to expensive emission related components.

 

Your vehicle will FAIL its emissions test if the Malfunction Indicator Lamp (MIL) is lit when tested.  To avoid this, it is suggested that you have your vehicle’s OBDII system diagnosed by a qualified mechanic prior to having it emission inspected.

 

  


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