DTC 604

UnclassifiedGeneral

What This Code Means

MIL (Malfunction Indicator Light) ON; Engine shutdown

Possible Causes

  • Faulty ECM
  • Faulty power and ground circuits to ECM
  • Faulty wiring to ECM
  • Intermittent fault
  • Internal microprocessor error

Suggested Actions

  1. 1Allow the ECM to attempt to reset itself
  2. 2Check all power and ground circuits to ECM
  3. 3Clear the code using the DST (Diagnostic Service Tool)
  4. 4Perform On-Board (OBD) System Check
  5. 5Repair wiring to ECM and retest
  6. 6Replace ECM with known good part and retest

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for DTC 604 on your specific Power Solutions International, Inc. unit — cited to the OEM manual, not a forum guess.

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