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:
Towing the Vehicle
Caution:
Incorrectly towing a disabled
vehicle may cause damage. The
damage would not be covered by
the vehicle warranty.
Do not lash or hook to
suspension components. Use the
proper straps around the tires to
secure the vehicle.
Have the vehicle towed on a wheel
lift tow truck or flatbed car carr
Windshield Replacement
HUD System
The windshield is part of the HUD
system. If the windshield needs to
be replaced, be sure to get one that
is designed for HUD or the HUD
image may look out of focus.
Driver Assistance Systems
If the windshield needs to be
replaced and the vehicle is
equipped with a front camera sensor
for
