C0238 Code - Wheel Speed Mismatch
Quick Answer
The C0238 diagnostic trouble code (DTC) indicates a wheel speed mismatch, which means that there is a discrepancy between the speeds of the wheels on the same axle. Common causes include Faulty wheel speed sensors, Dirty or damaged wheel speed sensor connections, Worn or damaged wheel bearings. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C0238 indicates Wheel Speed Mismatch.
- Common causes
- Common causes include Faulty wheel speed sensors, Dirty or damaged wheel speed sensor connections, Worn or damaged wheel bearings.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C0238 Description
The C0238 diagnostic trouble code (DTC) indicates a wheel speed mismatch, which means that there is a discrepancy between the speeds of the wheels on the same axle. This can lead to issues with the vehicle's stability control and anti-lock braking systems. When the vehicle's onboard computer detects that the wheel speeds are not matching as they should, it may trigger this code to alert the driver of a potential problem. This discrepancy in wheel speeds can be caused by various factors, such as issues with the wheel speed sensors, ABS system, or the wheel bearings.
Common Causes of C0238
- Faulty wheel speed sensors
- Dirty or damaged wheel speed sensor connections
- Worn or damaged wheel bearings
- Corroded or damaged wiring harness
- Issues with the ABS control module
Symptoms of C0238
- Illumination of the ABS warning light on the dashboard
- Traction control system engaging unexpectedly or not working properly
- Vehicle pulling to one side while braking
- Strange noises coming from the wheels while driving
- Uneven tire wear
How to Fix C0238
- Diagnose the specific wheel speed sensor that is causing the mismatch
- Inspect and clean the wheel speed sensor connections
- Replace any faulty wheel speed sensors or damaged wiring harness
- Check and replace any worn or damaged wheel bearings
- Clear the DTC and perform a test drive to ensure the issue is resolved
Cost to Fix C0238
The cost of repairing a wheel speed mismatch issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. Keep in mind that prices may differ based on the make and model of your vehicle, as well as the severity of the issue. It's recommended to get a few quotes from different auto repair shops to find the best deal.
Need more information about the C0238 code?
Need more information on how to fix the C0238 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C0238 code diagnosed by a professional: Find a repair shop in your area
Code C0238 Information for Specific Makes
- C0238 Buick — Wheel Speed Mismatch
- C0238 Cadillac — Wheel Speed Mismatch
- C0238 Chevrolet — Wheel Speed Mismatch
- C0238 GMC — Wheel Speed Mismatch
Frequently Asked Questions about C0238 Code
1. What are the common symptoms of OBDII code C0238 (Wheel Speed Mismatch)?
- Common symptoms include the ABS light being illuminated on the dashboard, traction control system malfunctions, and potential issues with the vehicle's stability control.
2. What causes OBDII code C0238 (Wheel Speed Mismatch) to trigger?
- This code is typically triggered when the ABS system detects a discrepancy in wheel speed data from different sensors, indicating potential issues with the speed sensors, wiring, or ABS module.
3. How can I diagnose the root cause of OBDII code C0238 (Wheel Speed Mismatch)?
- Diagnosing this code often involves inspecting the wheel speed sensors, checking for any damaged wiring, testing the ABS module, and ensuring proper sensor alignment and calibration.
4. Can weather conditions affect the triggering of OBDII code C0238 (Wheel Speed Mismatch)?
- Yes, extreme weather conditions such as heavy rain, snow, or ice can sometimes interfere with the wheel speed sensors and lead to the triggering of this code.
5. Are there any DIY repair tips for addressing OBDII code C0238 (Wheel Speed Mismatch)?
- DIY repair tips may include checking and cleaning the wheel speed sensors, inspecting the wiring harness for damage, ensuring proper sensor alignment, and resetting the ABS system.
6. Is it safe to continue driving with OBDII code C0238 (Wheel Speed Mismatch) present?
- It is not recommended to continue driving with this code present, as it can affect the proper functioning of the ABS, traction control, and stability control systems, potentially compromising vehicle safety.
7. How can a mechanic reset OBDII code C0238 (Wheel Speed Mismatch)?
- A mechanic can reset this code using a diagnostic scanner capable of clearing ABS fault codes after addressing the underlying issue with the wheel speed sensors or ABS system.
8. Are there any recalls related to OBDII code C0238 (Wheel Speed Mismatch)?
- Recalls related to this specific OBDII code are rare, but it's essential to check with the vehicle manufacturer or authorized dealers for any relevant recall information.
9. Can OBDII code C0238 (Wheel Speed Mismatch) be a false alarm?
- While rare, false alarms for this code can occur due to temporary sensor malfunctions or intermittent wiring issues. It's crucial to thoroughly diagnose the problem to rule out false alarms.
10. How much does it typically cost to repair OBDII code C0238 (Wheel Speed Mismatch)?
- The cost of repairing this code can vary depending on the underlying issue, but it may involve sensor replacement, wiring repairs, or ABS module diagnostics, with potential costs ranging from $100 to $500 or more.
Discuss the causes and fixes for C0238 OBDII Code
Code C0238 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.