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Home >> Buick >> 2021 >> Envision Essence, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Displays And Gauges >> Diagnostic Information and Procedures >> DTC U2A90 >> Diagnostic Aids

Diagnostic Aids

A dead, disconnected, or replaced battery can cause this DTC to set and cause the odometer to be blank or incorrect. Driving the vehicle will usually correct the odometer mismatch. Drive the vehicle 1 - 2 miles before attempting a repair or diagnosis.