21 23

UnclassifiedGeneral

What This Code Means

Malfunction Indicator Lamp (MIL) ON during active fault; Limited operation; Forced idle; Engine shutdown

Possible Causes

  • •FPP voltage < 0.2 volts
  • •FPP1/FPP2 voltage is lower than the limit defined in the engine calibration

Related Power Solutions International Fault Codes

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Get a diagnosis walkthrough for 21 23 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.

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