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Home >> Chevrolet >> 2001 >> Impala V6-3.4L VIN E >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> Fuel Trim Learn

Fuel Trim Learn

The scan tool displays ENABLED or DISABLED. When conditions are appropriate for enabling long term fuel trim corrections, fuel trim learn will display YES. This indicates that the long term fuel trim is responding to the short term fuel trim. If the fuel trim learn displays NO, the long term fuel trim will not respond to the changes in the short term fuel trim.
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