Test Description

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Test Description
WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to step numbers on the diagnostic table.

  1. 2:  If DTC C0245 is a history code, this step checks if a specific wheel speed circuit malfunction DTC is set concurrently with DTC C0245.
  2. 5:  This step checks if the WSS harness is routed in close proximity to the spark plug wires.
  3. 7:  In this step, if the scan tool can record any erroneous WSS signals, diagnose that sensors first.
DTC C0245

Step Action Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
Are any of the following DTCs set concurrently with a history DTC C0245?
  • DTC C0035
  • DTC C0040
  • DTC C0045
  • DTC C0050
Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information Go to Step 3 
3 Inspect the wheel speed sensor (WSS) for physical damage.
Is physical damage of the WSS evident?
Go to Step 4  Go to Step 5 
4 Replace the WSS. Refer to Wheel Speed Sensor Replacement - Front  or Wheel Speed Sensor Replacement - Rear .
Is the replacement complete?
Go to Step 12  -
Check for proper routing of the WSS harness. Check that the WSS harness is routed away from the spark plug wires.
Is the WSS harness properly routed?
Go to Step 7  Go to Step 6 
6 Reroute the WSS harness away from the spark plug wires.
Is the reroute complete?
Go to Step 12  -
  1. Reconnect all previously disconnected components.
  2. Install a scan tool.
  3. Turn the ignition switch to the RUN position.
  4. Set the scan tool to Snap Shot Auto Trigger mode and monitor the wheel speed sensors.
  5. Carefully drive the vehicle above 40 km/h (25 mph) for several minutes.
Did the scan tool trigger on any of the wheel speed sensors?
Go to Step 8  Go to Step 9 
8 Note which wheel speed sensor triggered the scan tool. Follow the appropriate wheel speed sensor malfunction DTC table for the wheel speed sensor that triggered. Refer to DTC Table.
Is the repair complete?
Go to Step 12  -
9
  1. Using a scan tool, clear the DTC.
  2. Remove the scan tool from the data link connector (DLC).
  3. Carefully drive the vehicle above 40 km/h (25 mph) for several minutes.
Does the DTC reset as a current DTC?
Go to Step 11  Go to Step 10 
10 Malfunction is intermittent. Inspect all connectors and harnesses for damage that may result in an open or high resistance when connected. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Is the repair complete?
Go to Step 12  -
11 Replace the electronic brake control module (EBCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Is the replacement complete?
Go to Step 12  -
12
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?
Go to Step 2  System OK
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.