1026

UnclassifiedLubrication

What This Code Means

MIL ON during active fault; Engine shutdown; Malfunction Indicator Light (MIL) ON during active fault; MFG Upstream Pressure Voltage High

Possible Causes

  • MFG fluid upstream pressure sensor output voltage is higher than the internally-defined high voltage limit
  • Internal MFG fault relayed to the ECM via CAN communication
  • Faulty MFG
  • Intermittent problem

Suggested Actions

  1. 1Replace MFG with known good unit and retest
  2. 2Replace MFG with known good unit and retest.
  3. 3Perform On-Board (OBD) System Check
  4. 4Clear fault with DST (Diagnostic Scan Tool) with Key ON and Engine Running, and check if the fault resets
  5. 5Replace MFG and retest

Related Power Solutions International Fault Codes

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Get a diagnosis walkthrough for 1026 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.

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