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Home >> Mazda >> 1994 >> MX-6 Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Controls - Tests W/Codes - 2.0L A/T) >> Additional System Functions >> Engine Controls - Tests W/Codes - 2.0L A/T >> Failure Mode Effects Management (FMEM) Code 998

Failure Mode Effects Management (FMEM) Code 998

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

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