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

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 ENGINE CONTROLS - PINPOINT TESTS (EXCEPT DIESEL & HYBRID) . For a description of fuel trim, refer to POWERTRAIN CONTROL SOFTWARE , Fuel Trim.