Power Solutions, Inc.

224

UnclassifiedGeneral

What This Code Means

DST displays HO2S voltage fixed above 0.7 volts after 2 minutes of idle run time

Possible Causes

  • •Drastic variation in fuel quality (very high butane content)
  • •Faulty FTV (fuel trim valve)
  • •Faulty PTV (pressure trim valve)
  • •High secondary fuel pressure
  • •Intermittent problem
  • •Wire harness shorted signal to voltage
  • •Worn fuel mixer

Suggested Actions

  1. 1Connect Diagnostic Scan Tool (DST) in System Data Mode, run engine to full operating temperature, and idle for a minimum of 2 minutes
  2. 2Diagnose any other ECM codes that are present before beginning this diagnostic procedure
  3. 3Ensure specified HD-5 or HD-10 motor fuel grade propane is used
  4. 4Perform the On-Board (OBD) System Check
  5. 5Refer to Diagnostic Aids for DTC 224
  6. 6Refer to Intermittent section
  7. 7Refer to Wiring Repairs in Engine Electrical
  8. 8Repair wire harness shorted signal to voltage
  9. 9With Key OFF, disconnect HO2S wire harness connector and ECM wiring harness connector
  10. 10With Key ON, check for voltage between HO2S connector signal pin B and engine ground using a high impedance DVOM

Related Power Solutions, Inc. Fault Codes

262511221516212555211556142635135-BP636
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