Buick Regal 2018-2024 Service Manual / Accessories and Equipment / Cellular, Entertainment, and Navigation / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
- DTC B0997
- DTC B1024 (Audio Amplifier)
- DTC B1024 (Human Machine Interface Control Module)
- DTC B1025-B1135 (UQ3 without NKC)
- DTC B1025-B1135 (UQ3 with NKC)
- DTC B1025-B1135 (UQA with IO5/IO6)
- DTC B1025-B1135 (UQA without IO5/IO6)
- DTC B123E
- DTC B124B (IO5/IO6)
- DTC B124B (without IO5/IO6)
- DTC B125A (IOB)
- DTC B125A (IO5/IO6)
- DTC B125A (IOR/IOT/IOS)
- DTC B125B
- DTC B125C
- DTC B1265
- DTC B1271
- DTC B1277 (IO5/IO6)
- DTC B1277 (IOB)
- DTC B127C
- DTC B127E (IO6)
- DTC B127E (IOB)
- DTC B1287
- DTC B1446 or B1447 (IOB/IO5/IO6)
- DTC B1446 or B1447 (IOR/IOS/IOT)
- DTC B2455 (IO5/IO6/IOB)
- DTC B2455 (IOR/IOU/IOT/IOS)
- DTC B2462 (without IO5/IO6)
- DTC B2462 (IO5/IO6 without UE1)
- DTC B2462 (IO5/IO6 with UE1)
- DTC B2470
- DTC B2476 or B2482
- DTC B2485
- Symptoms - Cellular Communication
- Application Malfunction
- Auxiliary Audio Input Malfunction (IO5/IO6)
- Auxiliary Audio Input Malfunction (IOB)
- Auxiliary Audio Input Malfunction (IOR/IOS/IOT)
- Bluetooth Malfunction (with IO5/IO6)
- Bluetooth Malfunction (without IO5/IO6)
- Digital Radio Poor or No Reception
- Phone Projection Malfunction (Apple Carplay)
- Phone Projection Malfunction (Android Auto)
- OnStar Microphone Malfunction (IO5/IO6/IOB)
- OnStar Microphone Malfunction (IOR/IOU/IOT/IOS)
- OnStar Audio Malfunction
- No Global Positioning System (GPS) Reception (without IO5/IO6)
- No Global Positioning System (GPS) Reception (IO5/IO6 without UE1)
- No Global Positioning System (GPS) Reception (IO5/IO6 with UE1)
- OnStar Button Led Malfunction
- OnStar Call Center Remote Function Requests Malfunction
- OnStar Button Malfunction
- Radio Controls Malfunction (IOB)
- Radio Information Display Malfunction (IOB)
- Radio Information Display Malfunction (IO5/IO6)
- Radio Information Display Malfunction (IOR/IOS/IOT)
- Radio Poor Reception (IOB)
- Radio Poor Reception (IO6)
- Radio Poor Reception (IOR/IOS/IOT)
- Speaker Malfunction (UQ3 without NKC)
- Speaker Malfunction (UQ3 with NKC)
- Speaker Malfunction (UQA with IO5/IO6)
- Speaker Malfunction (UQA without IO5/IO6)
- Unable to Contact OnStar Call Center
- Navigation System Malfunction (and SD Card Errors)
- Voice Recognition Malfunction (UE1)
- Voice Recognition Malfunction (without UE1)
READ NEXT:
DTC B0997
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.
Refe
DTC B1024 (Audio Amplifier)
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.
Refe
DTC B1024 (Human Machine Interface Control Module)
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.
Refe
SEE MORE:
DTC P0645, P0646, or P0647
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
Auxiliary Audio Input 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 provide an overview of each
diagnostic category.
Diagnosti
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