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Home >> Buick >> 2019 >> Encore Preferred, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls And Fuel - 1.4L (LUV) - Repair Instructions >> Repair Instructions >> Fuel Composition Reset >> With Scan Tool

With Scan Tool

  1. Ignition - On / Vehicle - In Service Mode
  2. Select:Module Diagnostics
  3. Select:Engine Control Module
  4. Select:Configuration/Reset Functions
  5. Select:Reset Functions
  6. Select:Fuel Composition Reset
  7. Follow the instructions on the scan tool.
  8. Perform the configuration/reset function:Fuel Trim Reset
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