Buick Regal: DTC C0176

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 C0176

Control Module Temperature Sensor

Symptom Byte Information: Symptom Byte List

Circuit/System Description

For an overview of the component/system, refer to:Power Steering System Description and Operation (Electronic Power Steering)

Conditions for Running the DTC

• Ignition = On
• Engine = Running
• System Voltage = 9 to 16 V

Conditions for Setting the DTC

Power Steering Control Module Temperature = 115 to 125ºC (240 to 257ºF)

Actions Taken When the DTC Sets

Power Steering Output Torque = Reduced

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 does not indicate any system malfunction. To avoid thermal damage, the power steering control module limits the current to the power steering motor. Aggressive steering may cause reduced steering assist. Discuss with the customer about the driving conditions when the concern occurred.

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

NOTE: A DTC may set depending on certain driving conditions and would not require a component replacement. Aggressive steering may cause reduced steering assist. Discuss with the customer about the driving conditions when the concern occurred.

1. Operate the vehicle within the Conditions for Running the DTC. Verify the DTC does not set.

• If the DTC sets

1. Ignition/Vehicle - Off
2. Verify the following conditions do not exist:Steering = Binding or Sticking
   • If a condition exists - Refer to:Steering Effort Hard or Too Easy in One or Both Directions
   • If no condition exists - Replace the component: Steering Gear

• Go to next step: If the DTC is not set

2. All OK.

Repair Instructions

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

• Electric Dual Pinion Rack and Pinion Steering Gear Replacement
• For control module replacement, programming, and setup refer to: Control Module References

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