AC-4

UnclassifiedCooling

What This Code Means

Fuel temperature sensor defect recognition; Error during a Write/Read EEPROM operation

Possible Causes

  • Defect in the electrical signal of the fuel temperature sensor
  • Unintended datasets flashing attempt during SW upgrades in field
  • Fuel temperature sensor electrical signal defect

Suggested Actions

  1. 1Take a default value for the fuel temperature
  2. 2Take a fix value or the actual engine temperature as substitution (depending on configuration by data set and reliability of the sensors)
  3. 3System substitutes a default value for the fuel temperature
  4. 4System substitutes a fixed value or the actual engine temperature depending on dataset configuration and sensor reliability

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