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 Instructionsprovides an overview of each diagnostic category.

DTC Descriptor
DTC C0456 4B
- 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 calibration needs to be learned to the new power steering control module using a scan tool, perform the Electronic Power Steering, Special Functions, Steering Angle Sensor Centering procedure.

Reference Information
Schematic Reference

Power Steering Schematics Electrical Diagrams
Connector End View Reference

Component Connector End Views Connector End Views By Name
Description and Operation

Power Steering System Description and Operation (Electronic Power Steering) Power Steering System (Electronic Power Steering)
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 Referencesfor scan tool information

Circuit/System Verification

1. Ignition ON.
2. With a scan tool verify that DTC C0456 4B is not set.

• If the DTC is set
Refer to Circuit/System Testing below.

• If the DTC is not set.

3. All OK.

Circuit/System Testing

1. With a scan tool perform the power steering control module programming and setup procedure Power Steering Control Module Calibration.
2. Verify that the DTC C0456 4B does not reset.

• If the DTC resets
Replace the K43 Power Steering Control Module.

• If the DTC does not reset

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing repair procedures.

* Steering Gear Replacement (NJ1) Steering Gear Replacement (NJ1)Steering Gear Replacement (NV7 or N40) Steering Gear Replacement (NV7 or N40)
* Control Module References Control Module Referencesfor power steering control module replacement, programming and setup