Buick Regal: DTC C056D (Power Steering Control Module)
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.
- If the DTC is 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:
DTC C056E (Power Steering Control Module)
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
DTC C1436
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
Symptoms - Power Steering System
NOTE: Review the system description and operation in order to
familiarize yourself
with the system functions. Refer to Power Steering System Description and
Operation (Electronic Power Steering).
Vis
SEE MORE:
Universal Remote System
Operation
Using the Universal Remote
System
Press and hold the appropriate
Universal Remote system button for
at least one-half second. The
indicator light will come on while the
signal is being transmitted.
Erasing Universal Remote
System Buttons
Erase all programmed buttons when
vehicle ownership is termina
Where to Put the Restraint
According to accident statistics,
children and infants are safer when
properly restrained in an appropriate
child restraint secured in a rear
seating position.
Whenever possible, children aged
12 and under should be secured in
a rear seating position.
Never put a rear-facing child
restraint in the
