Power Solutions International, Inc.

1153

UnclassifiedEmissions

What This Code Means

Closed Loop multiplier out of range (greater than 35%) while running on natural gas; Lean exhaust condition; False lean condition; Misfiring cylinder; Current supply issues

Possible Causes

  • •Large vacuum leaks
  • •Crankcase leaks
  • •Faulty EPR (Electronic Pressure Regulator)
  • •Faulty fuel mixer
  • •Low fuel pressure
  • •Exhaust leak
  • •Misfiring cylinder
  • •Drastic variation in fuel quality
  • •Faulty grounds (high resistance between ECM/engine and battery)
  • •Oxygen sensor wire mispositioned contacting the exhaust
  • •Short to ground between harness and sensor sense signal
  • •Faulty O2 sensor

Suggested Actions

  1. 1Ensure fuel pressure is not too low
  2. 2Ensure gaseous fuel control actuator/regulator has proper fuel pressure under all operating conditions
  3. 3Ensure ECM and engine are grounded to the battery with very little resistance
  4. 4Check for short to ground between harness and sensor sense signal
  5. 5Replace the O2 sensors with known good parts and retest

Related Power Solutions International, Inc. Fault Codes

1330DTC 2211181171131154116211111164891 41171726
Browse all Power Solutions International, Inc. fault codes

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