AutoCodes – GMC – C1228 GMC

C1228 GMC 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 GMC 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 2,139

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

What does this mean?

What are the Possible Causes of the DTC C1228 GMC?

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 GMC?

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 GMC 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.

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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 GMC Code

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

The common symptoms include the ABS warning light illuminating on the dashboard and potential issues with the vehicle's stability control system.

2. What can cause OBDII code C1228 GMC to trigger?

The code C1228 GMC is typically triggered by excessive wheel speed variation detected in the right rear wheel, which may be caused by a faulty wheel speed sensor, damaged wiring, or issues with the wheel bearing.

3. How can I diagnose the source of OBDII code C1228 GMC?

Diagnosing the code C1228 GMC involves inspecting the right rear wheel speed sensor, checking the wiring for any damage or corrosion, and ensuring the wheel bearing is in good condition.

4. Can driving with OBDII code C1228 GMC pose any risks?

Continued driving with code C1228 GMC may affect the vehicle's stability control system and ABS function, potentially compromising safety during braking and cornering maneuvers.

5. What are some possible repair tips for resolving OBDII code C1228 GMC?

Repair tips for resolving code C1228 GMC may include replacing the right rear wheel speed sensor, repairing or replacing any damaged wiring, and inspecting the wheel bearing for wear or damage.

6. Is it safe to continue driving my vehicle with OBDII code C1228 GMC?

It is not recommended to continue driving the vehicle with code C1228 GMC, as it can lead to safety concerns and potential issues with the vehicle's braking and stability control systems.

7. Can OBDII code C1228 GMC be cleared/reset without addressing the underlying issue?

Clearing or resetting the code without addressing the underlying issue, such as a faulty wheel speed sensor or damaged wiring, may result in the code reappearing once the system detects the problem again.

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

The cost of repairing code C1228 GMC can vary depending on the specific cause of the issue, but it may involve the cost of parts such as a new wheel speed sensor and labor for installation.

9. Are there any DIY solutions for fixing OBDII code C1228 GMC?

DIY solutions for fixing code C1228 GMC may include checking and cleaning the wheel speed sensor connections, inspecting the wiring for damage, and ensuring the wheel bearing is properly secured.

10. Can extreme weather conditions affect the triggering of OBDII code C1228 GMC?

Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate issues related to code C1228 GMC by affecting the wheel speed sensor's performance or causing additional strain on the wheel bearing.