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Home >> Mazda >> 1992 >> Navajo DX, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic System >> Additional System Functions >> Failure Mode Effects Management (FMEM), Code 98 Or 998
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Failure Mode Effects Management (FMEM), Code 98 Or 998

FMEM mode allows system operation when sensors fail or transmit signals which are out of normal operating range. When this happens, ECA substitutes a mid-range signal for defective sensors while continuing to monitor sensors. If faulty sensor's signals return to normal operating range, ECA will use those signals. A Code 98 or 998 will be displayed when FMEM mode is in effect.