Buick Regal 2018-2026 Service Manual / Engine / Engine Cooling / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
- DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LTG)
- DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LGX)
- DTC P1258
- Symptoms - Engine Cooling
- Cooling Fan Always On (Dual Fan)
- Cooling Fan Always On (Single Fan)
- Cooling Fan Inoperative (LGX)
- Cooling Fan Inoperative (LTG)
- Pressure Cap Testing
- Cooling System Leak Testing (Pressure Test)
READ NEXT:
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.
Diag
DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LGX)
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.
Diag
DTC P1258
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.
Diag
SEE MORE:
Radio Information Display Malfunction (IO5/IO6)
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.
Refer to Diagnostic Procedure Instructions for an overview of each
diagnostic category.
Circuit/Syste
DTC C12A1 or C12A9
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 Descriptor
DT
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