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Adaptive Fuel Diagnostic Trouble Code (DTC) Diagnostic Techniques: Notes

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The Adaptive Fuel DTC Diagnostic Techniques help isolate the root cause of the adaptive fuel concern. Before proceeding, attempt to verify if any driveability concerns are present. These diagnostic aids are meant as a supplement to the pinpoint test steps in PINPOINT TESTS -- GASOLINE MODELS . For a description of fuel trim, refer to POWERTRAIN CONTROL SOFTWARE , Fuel Trim.