C0245

DTC C0245

DTC Descriptor
DTC C0245
- Wheel Speed Sensor Frequency Error

Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

Circuit/System Description

As the wheel spins, the wheel speed sensor produces an AC signal. The electronic brake control module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.

Conditions for Running the DTC

* The ignition is ON.
* Ignition voltage is greater than 8 volts.
* Vehicle must be moving at a speed less than 9 mph.
* No wheel speed sensor faults exist.
* Brake is not applied.
* Vehicle is not cornering.
* No wheel spinning is detected.

Conditions for Setting the DTC

Wheel speed differences between one wheel and the others is greater than 25 percent.

Action Taken When the DTC Sets

* Antilock Brake System (ABS), Traction Control System (TCS) and Vehicle Stability Enhancement System (VSES) are inhibited.
* The ABS indicator turns ON.

Conditions for Clearing the MIL/DTC

* The condition for the DTC is no longer present.
* The condition for the DTC is no longer present and the DTC is cleared with a scan tool.

Diagnostic Aids

* Faulty wheel speed sensor will not set this DTC.
* A vehicle using a space saver spare will not set this code.

Circuit/System Verification

Inspect for one tire that has improper air pressure or improper size.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests