U0118 FORD - Lost Communication With Fuel Additive Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Top Off Fuel Additive Tank
  • Faulty Fuel Additive Sensor
  • Faulty Fuel Additive Control Module
  • Fuel Additive Control Module harness is open or shorted
  • Fuel Additive Control Module circuit poor electrical connection
  • Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • U0118 Ford Description

    The main purpose of the Fuel Additive Control Module is to calculate the required amount of fuel additive and control the time of injection into the fuel tank. It also stores Diagnostic Trouble Codes (DTC) for the fuel additive system. In addition to the already mentioned operation of the fuel additive system module, the instrument cluster will receive a command from the fuel additive system module to illuminate the Malfunction Indicator Lamp (MIL) or the Powertrain Control Module (PCM) warning indicator if there are concerns with the additive system or if the fuel additive tank requires refilling. The PCM will set the OBDII code when the PCM loses communication with the Fuel Additive Control Module.
    OBDII Code U0118 Ford - Lost Communication With Fuel Additive Control Module - AutoCodes.com

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