C0456

DTC C0456

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0456 4B

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Steering Position Sensor Calibration not Learned

Circuit/System Description

If the power steering control module is replaced, the calibration needs to be learned to the new power steering control module using a scan tool.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The calibration is not learned to the new power steering control module.

Action Taken When the DTC Sets

* DTC C0456 is stored in memory.

* The driver information center displays the SERVICE POWER STEERING warning message.

* No steering assist.

Conditions for Clearing the DTC

The scan tool function Steering Angle Sensor Centering procedure must be completed successfully.

Reference Information

Schematic Reference

Power Steering Schematics Electrical Diagrams

Connector End View Reference

Component Connector End Views Outside Rearview Mirror - Driver

Description and Operation

Power Steering System Description and Operation (Electronic Power Steering) Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. With a scan tool, verify that DTC C0456 4B is not set.

• If the DTC is set, calibrate the steering position sensor and verify the DTC does not reset. Refer to Power Steering Control Module Calibration Power Steering Control Module Calibration.

2. If the DTC resets, replace the steering gear.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Steering Gear Replacement Steering Gear Replacement

* Power Steering Assist Motor Replacement Service and Repair for power steering control module replacement

* Control Module References Control Module References for power steering control module programming and setup