DTC 1028

UnclassifiedGeneral

What This Code Means

MIL ON during active fault; Engine shutdown

Possible Causes

  • MFG fluid downstream pressure sensor output voltage is higher than the internally-defined high voltage limit
  • Fault is diagnosed internally within the MFG then relayed to the ECM via CAN communication

Suggested Actions

  1. 1Replace MFG with known good unit and retest

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for DTC 1028 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.

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