Buick Regal Owners & Service Manuals

Buick Regal: DTC B0550

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

DTC B0550

Odometer Circuit

  • Symptom Byte:32;General Memory Malfunction

Circuit/System Description

For an overview of the component/system, refer to:Instrument Cluster Description and Operation

Conditions for Running the DTC

Ignition - On / Vehicle - In Service Mode

Conditions for Setting the DTC

K9 Body Control Module = Internal Malfunction

Actions Taken When the DTC Sets

Odometer = "---"

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 B0550 is not set.

  • If the DTC is set
  1. Perform all necessary programming and setup procedures for the control module:K9 Body Control Module
  2. Verify the DTC does not set.
    • If the DTC sets - Replace the component:K9 Body Control Module
    • 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.

DTC B071F

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

Transmission Range Indicator

  • Symptom Byte:32 - Internal Malfunction

Circuit/System Description

The indicator has a series of LEDs that show in which range the transmission is.The device is controlled over a serial data bus by the body control module.

For an overview of the component/system, refer to:Instrument Cluster Description and Operation.

Conditions for Running the DTC

Ignition - On / Vehicle - In Service Mode

Conditions for Setting the DTC

K9 Body Control ModuleDetectedTransmission Range Indicator=Internal Malfunction

Actions Taken When the DTC Sets

No additional actions taken

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

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 B071F is not set.

  • If the DTC is set

Replace the component: P2 Transmission Shift Lever Position Indicator

  • 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.

Displays and Gauges Component Replacement Reference.

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