Power Solutions International

1162

UnclassifiedFuel

What This Code Means

One engine bank shows high adaptive multiplier and the other shows low; Malfunction Indicator Lamp (MIL) ON; Fuel system running rich; Adaptive multiplier out of range (greater than -30% while running on propane); One engine bank shows high adaptive and the other shows low adaptive

Possible Causes

  • •Plugged, damaged, or modified air filter
  • •Crossed O2 sensor leads
  • •Adaptive multiplier out of range greater than -30% while running on propane
  • •High secondary fuel pressure
  • •Worn fuel mixer
  • •Faulty Electronic Pressure Regulator (EPR)
  • •Drastic variation in fuel quality (very high butane content)
  • •Faulty EPR (Electronic Pressure Regulator)
  • •Crossed O2 (UEGO) sensor leads

Suggested Actions

  1. 1Trace O2 sensor wires back to their ECMs and correct accordingly
  2. 2Run the fuel system diagnostics
  3. 3Ensure specified HD-5 or HD-10 motor fuel grade propane is used
  4. 4Run the fuel system diagnostics before using the diagnostic chart
  5. 5Verify specified HD-5 or HD-10 motor fuel grade propane is used
  6. 6Trace O2 sensor wires back to their ECMs and correct them accordingly

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