Buick Regal: Diagnostic Information and Procedures

 DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LTG)

Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors D

 Battery - North America

The original equipment battery is maintenance free. Do not remove the cap and do not add fluid. If equipped with a V6 engine, the battery is under the trim panel on the left side of the rear cargo area. If equipped with an L4 engine, the battery is under the hood. See Engine Compartment Overview.