1164

UnclassifiedFuel

What This Code Means

Adaptive multiplier out of range greater than -30% while running on natural gas; MIL ON; Fuel system runs rich; One bank shows high adaptive and the other is low

Possible Causes

  • High secondary fuel pressure
  • Worn fuel mixer
  • Faulty EPR (Electronic Pressure Regulator)
  • Drastic variation in fuel quality (very high butane content)
  • Plugged, damaged or modified air filter
  • O2 sensor leads are crossed

Suggested Actions

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

Related Power Solutions International, Inc. Fault Codes

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Get a diagnosis walkthrough for 1164 on your specific Power Solutions International, Inc. unit — cited to the OEM manual, not a forum guess.

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