Buick Regal: DTC C056D
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 C056D
Electronic Control Unit Hardware
Symptom Byte Information: Symptom Byte List.
Circuit/System Description
The internal fault detection is handled inside the control module. No
external circuit diagnosis is involved.
Conditions for Running the DTC
Ignition On
Conditions for Setting the DTC
K43 Power Steering Control Module = Malfunction
Actions Taken When the DTC Sets
K43 Power Steering Control Module = Disabled
Conditions for Clearing the DTC
- A current DTC will clear on the next malfunction-free ignition cycle.
- A history DTC will clear after 40 consecutive malfunction-free ignition
cycles.
Diagnostic Aids
- This DTC can be set as a history DTC without affecting the operation of
the component: K43 Power
Steering Control Module
- If set only as a history DTC, do not replace any component.
Reference Information
Schematic Reference
Power Steering Wiring Schematics
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 C056D is not set.
- Perform all necessary programming and setup procedures for the control
module: K43 Power
Steering Control Module
- Verify the DTC does not set.
- If the DTC sets - Replace the component: K43 Power Steering Control
Module
- Go to next step: If the DTC is not set
- 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
READ NEXT:
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
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
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
SEE MORE:
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
ABS DESCRIPTION AND OPERATION
B22 - B22 Brake Pedal Position Sensor
S48E - S48E Multifunction Switch - Center Console
P16 - P16 Instrument Cluster
K9 - K9 Body Control Module
K20 - K20 Engine Control Module
K71 - K71 Transmission Control Module
K17 - K17 Electronic Brake Control Module
Q5 - Q5 Brak