AutoCodes – Buick – C1228 Buick

C1228 Buick Code - Right Rear Excessive Wheel Speed Variation

Quick Answer

As the wheel spins, the wheel speed sensor produces an AC signal. Common causes include Faulty Hub Assembly (Right Rear Wheel Speed Sensor is part of hub assembly), Faulty Right Rear Wheel Speed Sensor, Right Rear Wheel Speed Sensor harness is open or shorted. 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: C1228 Buick indicates Right Rear Excessive Wheel Speed Variation.
Common causes: Common causes include Faulty Hub Assembly (Right Rear Wheel Speed Sensor is part of hub assembly), Faulty Right Rear Wheel Speed Sensor, Right Rear Wheel Speed Sensor harness is open or shorted.
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.

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Code Popularity 1,662

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1228 Buick 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. The EBCM will set the OBDII code when the sensor is not to factory specifications.

OBDII Code C1228 Buick - Right Rear Excessive Wheel Speed Variation - AutoCodes.com — C1228 Buick Code - Right Rear Excessive Wheel Speed Variation

What does this mean?

What are the Possible Causes of the DTC C1228 Buick?

Faulty Hub Assembly (Right Rear Wheel Speed Sensor is part of hub assembly)
Faulty Right Rear Wheel Speed Sensor
Right Rear Wheel Speed Sensor harness is open or shorted
Right Rear Wheel Speed Sensor circuit poor electrical connection

How to Fix the DTC C1228 Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1228 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1228 Buick code?

Need more information on how to fix the C1228 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1228 Buick Code

1. What are the common symptoms of OBDII code C1228 Buick (Right Rear Excessive Wheel Speed Variation)?

The common symptoms include traction control and stability control warning lights illuminated on the dashboard, potential loss of traction control functionality, and possible issues with ABS operation.

2. What could cause the OBDII code C1228 Buick to be triggered?

The code C1228 Buick is typically triggered by excessive wheel speed variation detected in the right rear wheel by the ABS control module.

3. How can I diagnose the cause of the OBDII code C1228 Buick?

Diagnosing the cause of this code usually involves checking the right rear wheel speed sensor for proper operation, inspecting the wheel speed sensor wiring for damage or corrosion, and ensuring the wheel speed sensor tone ring is clean and undamaged.

4. Can a faulty wheel speed sensor cause the OBDII code C1228 Buick?

Yes, a faulty right rear wheel speed sensor can cause the code C1228 to be triggered due to inaccurate or erratic wheel speed readings.

5. What is the recommended repair for OBDII code C1228 Buick?

The recommended repair typically involves addressing the underlying issue causing the excessive wheel speed variation, which may include replacing the right rear wheel speed sensor, repairing damaged wiring, or cleaning the tone ring.

6. Is it safe to continue driving with the OBDII code C1228 Buick present?

It is generally not recommended to continue driving with the code C1228 triggered, as it may affect the proper operation of the vehicle's traction control and ABS systems, potentially compromising safety.

7. Can I reset the OBDII code C1228 Buick without repairing the issue?

While you can clear the code temporarily, it is important to address the underlying cause to prevent it from reoccurring and potentially causing safety issues while driving.

8. How much does it typically cost to repair the OBDII code C1228 Buick?

The cost of repairing the code C1228 Buick can vary depending on the exact cause of the issue, but it may involve replacing the wheel speed sensor, which can cost between $100 to $300 including parts and labor.

9. Are there any DIY tips for troubleshooting the OBDII code C1228 Buick?

DIY troubleshooting tips may include visually inspecting the right rear wheel speed sensor and its wiring for any obvious damage, checking for loose connections, and ensuring the sensor is properly aligned with the tone ring.

10. How long does it usually take to repair the OBDII code C1228 Buick?

The repair time for addressing the code C1228 Buick can vary depending on the extent of the issue and the availability of parts, but it typically takes a few hours to complete the repair.