C0035 Code: Understanding Wheel Speed Sensor Issues

Encountering the C0035 code? Don’t worry – we’re here to help. The C0035 code is a common ABS fault code that relates to wheel speed sensor issues in vehicles

In this comprehensive article, we’ll be your trusted companion as we explore the ins and outs of the C0035 code. From identifying symptoms to uncovering causes and offering practical solutions, we’ve got you covered. 

So, let’s dive in!

C0035 OBD2 Code: A Quick Overview

Take a quick look at the key information of the C0035 code below!

  • Definition: Right Front Wheel Speed Sensor Supply (subfault)/ Left Front Wheel Speed Sensor
  • Severity: High
  • DIY Skill Level: Intermediate
  • Continue To Drive?: No
  • Estimated Repair Cost: $30 – $200

What Does The C0035 Code Indicate? 

The C0035 code indicates a fault related to the wheel speed sensor in the vehicle’s anti-lock brake system (ABS). Although this is a generic fault code, which can happen on all cars equipped with the OBD2 system, it most frequently occurs in GM vehicles, including popular models like Chevy Silverado, Impala, and Equinox. 

The wheel speed sensors play a vital role in the ABS system. Each wheel speed sensor generates a digital square wave signal as the front wheels spin. The electronic brake control module (EBCM) relies on the frequency of these signals to determine the speed of each wheel. When the EBCM detects an issue with the front wheel speed sensor or its circuit, such as a missing signal or significantly low supply voltage compared to the monitored ignition voltage, it logs the C0035 code.

Special Note: 

There might be variations in code definitions depending on the car model. When researching information about the C0035 code, you might come across these two definitions: “Right Front Wheel Speed Sensor Supply (subfault)” and “Left Front Wheel Speed Sensor.” 

In certain GM vehicles, the code is commonly referred to as “Right Front Wheel Speed Sensor Supply (subfault). The SAE organization also uses this definition for the C0035 code. While most cars will display the code in reference to the right front wheel, there are a few exceptions where it may pertain to the left wheel instead. 

To accurately diagnose the problem in your specific vehicle, it’s crucial to not only consider the diagnostic code you receive but also carefully review the short description of the problem that your car is experiencing.

C0035 Severity: Don’t Ignore It! 

The C0035 code should be considered a high-severity issue. Ignoring this code can adversely affect your vehicle’s performance and safety. It is important to address the issue promptly to avoid potential risks and ensure optimal operation of your vehicle’s braking system.

C0035 code
Don’t ignore the C0035 code!
(Image credit: 3800Pro Forum)

We advise against continuing to drive with the C0035 code. It’s recommended to have your vehicle inspected and repaired by a qualified mechanic who can diagnose the specific cause of the code and perform the necessary repairs. 

Signs Of The C0035 Code To Look Out For

When the C0035 code is present in your vehicle, you may experience several symptoms, such as:

  • Illuminated dashboard warning lights: Check Engine Light, ABS warning light, traction control light may also be illuminated
  • Inoperative or overactive ABS, traction control, and stability control systems
  • Issues with the vehicle speed displayed on the dashboard
  • Brake pedal shocks or abnormal feedback

Read more: GM OBD2 Codes List For FREE Download

Common Triggers Of The C0035 Code

The C0035 code can be triggered by various causes related to the wheel speed sensor and the ABS system, including:

  • Faulty or malfunctioning wheel speed sensor
  • Damaged or disconnected sensor wires
  • Poor connection or corrosion in the sensor circuit
  • Sensor reluctor wheel damage
  • Issues with the ABS module, including outdated software or programming

Read more: U0415 Code – Invalid Data Received From ABS Control

Step-by-Step Guide: Diagnosing And Fixing The C0035 Code 

Check the following sections as we guide you through diagnosing and repairing the C0035 code.  

Essential Tools And Parts

Step-by-Step Procedure

Step 1: Retrieve DTCs and identify the affected wheel speed sensor

Connect the OBD-II scanner or diagnostic tool to retrieve the specific trouble codes. Take note of any accompanying codes that may be present. Address these codes first before proceeding with the C0035 diagnosis and repair process.

The OBD-II scanner or diagnostic tool should provide information about which wheel speed sensor is causing the code C0035. Typically, the code will specify the specific wheel or location, such as the front left (FL) or front right (FR) wheel speed sensor.

Step 2: Inspect the sensor wires and connectors

Inspect the sensor wires and connectors for visible damage, such as cuts or loose connections. Clean the connectors using an electrical contact cleaner to remove any corrosion or dirt.

Step 3: Check the sensor reluctor wheel

Check the sensor reluctor wheel for damage or debris. Clean it using a wire brush or abrasive pad if necessary.

Step 4: Test the wheel speed sensor resistance

Test the resistance of the wheel speed sensor using a multimeter. Compare the resistance readings to the manufacturer’s specifications to determine if the sensor is faulty.

Step 5: Replace the faulty wheel speed sensor

If the sensor is determined to be faulty, replace it with a new one. Ensure proper installation by connecting the electrical connector and securely fastening the sensor.

Step 6: Clear codes and test drive

Clear the trouble codes using the OBD-II scanner and test drive the vehicle to ensure the code does not reappear.


  • The exact location of the wheel speed sensor can vary depending on your vehicle’s specific model. For example, in many Chevrolet vehicles, the wheel speed sensors are typically located near the wheel hub or inside the wheel bearing assembly. While in Ford F-150 trucks, these sensors are typically located on each wheel hub assembly, near the brake rotor or axle.
  • It’s recommended to consult a service manual or seek professional assistance for detailed instructions specific to your vehicle’s make and model. 
  • Additionally, taking necessary safety precautions, such as wearing gloves and working in a well-ventilated area, is essential during the repair process.
Learn effective tips for dealing with the C0035 code in this video.

DIY Repair Level And Estimated Costs

DIY enthusiasts with intermediate mechanical skills can attempt the wheel speed sensor diagnostic and repair process. It involves basic electrical troubleshooting, visual inspection, and potential component replacement. 

Diagnosing and cleaning the sensor connectors or reluctor wheel is relatively easy and can be done by most people. However, it’s best to consult an expert mechanic if sensor replacement or advanced troubleshooting is needed.

Below is a general overview of the estimated costs for common repair tasks related to the wheel speed sensor issue:

Repair TaskCost Range
Diagnostic fee$50 – $150
Wiring Repair$50 – $200 
Wheel speed sensor replacement$50-$150 (including labor)

Remember, these costs are approximate and can vary depending on factors such as vehicle make and model, location, and labor rates. It’s always recommended to obtain an accurate estimate from a trusted mechanic or repair shop.

Wrapping Up

So, to wrap things up, remember that understanding and addressing the C0035 code is key to keeping your ABS system performing at its best.

But hey, we get it – not everyone is a car repair expert. That’s why it’s always a smart move to turn to a qualified mechanic when you need that extra expertise. 

If you find this guide helpful, don’t keep it to yourself! Share it with others who may benefit from it. Also, leave your questions or insights about the C0035 code in the comments below. 

Wishing you safe and enjoyable driving experiences ahead!

Reference Sources

  1. Tire Review, Wheel Speed Sensor Diagnostics for Meters and Scopes
  2. MyCarDoesWhat, Anti-Lock Braking System.