187

UnclassifiedElectrical

What This Code Means

DST displays FT voltage less than the limit defined in calibration; DST displays FT voltage of 0.1 or less when FT sensor is disconnected

Possible Causes

  • Intermittent problem (operating condition dependent)
  • Faulty FT sensor
  • Sensor signal circuit shorted to ground
  • Faulty ECM

Suggested Actions

  1. 1Perform the On-Board (OBD) System Check
  2. 2With Key ON, Engine Running and System Mode = 'Running', check if DST displays FT voltage less than the limit defined in calibration
  3. 3With Key OFF, Key On, Engine Off and System Mode = 'Stopped', wait for fuel pump to stop running, disconnect FT sensor from harness, and check if DST displays FT voltage of 0.1 or less
  4. 4Check wire harness for ground short

Related Power Solutions International Fault Codes

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 187 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.

TRY IT FREE