Failure Mode Effects Management

Failure Mode Effects Management (FMEM) is an alternate system strategy in the Powertrain Control Module (PCM) designed to maintain vehicle operation if one or more sensor inputs fail.

When a sensor input is perceived to be out-of-limits by the PCM, an alternative strategy is initiated. The PCM substitutes a fixed value and continues to monitor the incorrect sensor input. if the suspect sensor operates within limits, the PCM returns to the normal engine running strategy.

All FMEM sensors display a sequence error message on the scan tool. The message may or may not be followed by a Key On Engine Off or Continuous DTCs when attempting Key On Engine Running Self-Test Mode.