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Home >> Kia >> 2005 >> Optima EX, 2.7 8 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System/Fuel System - 2.7L >> MFI Control System >> Description >> Fuel System Monitoring >> Mil Illumination
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Mil Illumination

When the fuel trim value exceeds the failure thresholds, when the MIL is only turned ON if the same fault is detected during a second drive cycle.

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