148

UnclassifiedFuel

What This Code Means

Fuel run-out longer than expected; Engine does not stop after turning off natural gas manual valve; Voltage across natural gas lockoff solenoid terminals A and B does not immediately turn OFF with system voltage during key OFF

Possible Causes

  • Faulty natural gas lockoff solenoid
  • Natural gas solenoid control short to ground
  • Damaged, corroded, or contaminated ECM wire harness or connector
  • Faulty ECM
  • Intermittent electrical problem

Suggested Actions

  1. 1Replace the natural gas lockoff solenoid
  2. 2Repair the natural gas solenoid control short to ground
  3. 3Correct the ECM wire harness or connector problem
  4. 4Replace the ECM

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