Engine-CodesChevrolet – C1227 Chevrolet

C1227 Chevrolet Code - Left Rear Excessive Wheel Speed Variation

Quick Answer

When the C1227 code is triggered in a Chevrolet vehicle, it indicates that there is excessive wheel speed variation detected in the left rear wheel. Common causes include Faulty wheel speed sensor in the left rear wheel, Corroded or damaged wiring/connectors related to the left rear wheel speed sensor, Wheel bearing or hub assembly issues in the left rear wheel. 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
C1227 Chevrolet indicates Left Rear Excessive Wheel Speed Variation.
Common causes
Common causes include Faulty wheel speed sensor in the left rear wheel, Corroded or damaged wiring/connectors related to the left rear wheel speed sensor, Wheel bearing or hub assembly issues in the left rear wheel.
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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code C1227 Chevrolet Description

When the C1227 code is triggered in a Chevrolet vehicle, it indicates that there is excessive wheel speed variation detected in the left rear wheel. This issue can have a significant impact on the vehicle's performance and safety. The wheel speed sensors are responsible for monitoring the speed of each wheel and sending this information to the vehicle's anti-lock braking system (ABS) and traction control system. When there is excessive wheel speed variation in the left rear wheel, it can lead to issues with the ABS and traction control systems, potentially causing loss of traction, stability, and control while driving. This can result in dangerous driving conditions, especially in slippery or wet road conditions.

OBDII Code C1227 Chevrolet - Left Rear Excessive Wheel Speed Variation
C1227 Chevrolet Code - Left Rear Excessive Wheel Speed Variation

Common Causes of C1227 Chevrolet

  1. Faulty wheel speed sensor in the left rear wheel
  2. Corroded or damaged wiring/connectors related to the left rear wheel speed sensor
  3. Wheel bearing or hub assembly issues in the left rear wheel
  4. ABS module malfunction
  5. Issues with the tone ring or reluctor ring on the left rear wheel

Symptoms of C1227 Chevrolet

  1. ABS warning light illuminated on the dashboard
  2. Traction control system warning light activated
  3. Difficulty maintaining control of the vehicle
  4. Increased stopping distance
  5. Uneven braking or pulling to one side during braking

How to Fix C1227 Chevrolet

  1. Diagnose the specific cause of the excessive wheel speed variation in the left rear wheel using a diagnostic scanner.
  2. Inspect and test the left rear wheel speed sensor, wiring, and connectors for any faults or damage.
  3. Check the wheel bearing and hub assembly in the left rear wheel for any issues and replace if necessary.
  4. Inspect the ABS module for malfunctions and repair or replace as needed.
  5. Clear the fault codes, reset the ABS system, and perform a road test to ensure the issue has been resolved.

Cost to Fix C1227 Chevrolet

The typical repair costs for addressing a C1227 code in a Chevrolet can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the repair for this issue may range from $200 to $500, including the cost of parts and labor. However, it's important to note that the actual cost can be higher or lower based on the factors mentioned earlier, and it's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

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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.

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