Power Solutions International

188

UnclassifiedCooling

What This Code Means

Fuel temperature greater than the diagnostic threshold (>250°F); Malfunction Indicator Light (MIL) is ON during active fault; MIL (Malfunction Indicator Lamp) ON during active fault

Possible Causes

  • •High actual fuel temperature
  • •Faulty MFG (Manual Fuel Gauge / Multifunction Valve) or EPR (Electronic Pressure Regulator)
  • •Fuel temperature sensor voltage is greater than 4.95V
  • •Gaseous fuel temperature is greater than 250°F
  • •Potential issues with the gaseous fuel system
  • •Fuel temperature (FT) voltage greater than 4.95V
  • •Fuel temperature is greater than 250°F

Suggested Actions

  1. 1Perform On-Board (OBD) System Check
  2. 2Monitor fuel temperature with a display and measure actual temperature with an infrared gun or temperature probe
  3. 3Determine cause of high fuel temp and resolve
  4. 4Replace MFG or EPR

Related Power Solutions International Fault Codes

2171024157 41352116136011215171111572520240:3DTC 18 7
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