Buick Regal Owners & Service Manuals

Buick Regal: DTC B124F

Diagnostic Instructions

  • Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
  • Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
  • An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

Universal Serial Bus (USB) Programming

  • Symptom Byte:41–Not Programmed
  • Symptom Byte:42–Configuration Not Programmed
  • Symptom Byte:44–Security Access Not Activated
  • Symptom Byte:4A–Programming Checksum Error

Circuit/System Description

The control module P16 performs software checks to validate a programming event has completed successfully.No external circuit diagnosis is involved.

Conditions for Running the DTC

Ignition - On / Vehicle - In Service Mode

Conditions for Setting the DTC

P16 Instrument Cluster=Programming Malfunction

Actions Taken When the DTC Sets

DTCs Stored

Some functions will not work.

Conditions for Clearing the DTC

The conditions for setting the DTC no longer exist.

Reference Information

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Master Electrical Component List

Electrical Information Reference

  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC B124F is not set.

  • If the DTC is set
  1. Perform all necessary programming and setup procedures for the control module:P16 Instrument Cluster
  2. Verify the DTC does not set.
    • If the DTC sets - Replace the component:P16 Instrument Cluster
    • Go to next step: If the DTC is not set
  3. All OK.
  • Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification.

For control module replacement, programming, and setup refer to: Control Module References.

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