C1250

InfoCooling

What This Code Means

Rough running; Power imbalance between banks; Injector fault codes; Reduced boost; Excessive smoke; Turbo bearing noise; Coolant temperature exceedances; System pressure loss in either loop; Filter clogging; Hard starting; Injector fouling; Slow crank; Failed start; Reduced boost efficiency; Intake temperature rise; Misfiring; Rough idle; Check engine lamp; Elevated emissions; Rich or lean condition; Unstable idle; Poor transient response; Intermittent misfiring; No-start condition; Fault code; Elevated exhaust backpressure; Loss of power; Emissions exceedance; Excessive exhaust smoke; High exhaust temperature; Failed start requirement; Power imbalance; System pressure loss; Communication faults; Sensor input errors; Reduced power output

Possible Causes

  • MCRS fuel injection system fault
  • Turbocharger malfunction
  • 2P2L cooling system failure
  • Fuel quality degradation
  • Tank degradation
  • Stagnant fuel
  • Starting system (24V battery bank) degradation
  • Infrequent equipment exercise
  • Charge air cooler leaks
  • Infrequent exercise of units
  • Spark plugs (multi-cylinder) failure
  • Gas regulator / air-fuel mixer failure
  • Ignition system (coils / module) failure
  • Catalytic converter failure
  • Turbocharger failure
  • MCRS fuel injection system failure
  • Starting system (24V battery bank) failure
  • Infrequently exercised units
  • Fuel injection system (MCRS) injector fault
  • Cooling system failure

Suggested Actions

  1. 1Perform firmware update

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