AutoCodesChevrolet – C1225 Chevrolet

C1225 Chevrolet Code - Left Front Excessive Wheel Speed Variation

Quick Answer

As the wheel spins, the wheel speed sensor produces an AC signal. Common causes include Faulty Hub Assembly (Left Front Wheel Speed Sensor is part of hub assembly), Faulty Left Front Wheel Speed Sensor, Left Front 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
C1225 Chevrolet indicates Left Front Excessive Wheel Speed Variation.
Common causes
Common causes include Faulty Hub Assembly (Left Front Wheel Speed Sensor is part of hub assembly), Faulty Left Front Wheel Speed Sensor, Left Front 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 10,787
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 26, 2020
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Code C1225 Chevrolet 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 C1225 Chevrolet - Left Front Excessive Wheel Speed Variation - AutoCodes.com
C1225 Chevrolet Code - Left Front Excessive Wheel Speed Variation

What are the Possible Causes of the DTC C1225 Chevrolet?

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

How to Fix the DTC C1225 Chevrolet?

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 C1225 Chevrolet 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 C1225 Chevrolet Code

1. What does the OBDII code C1225 on a Chevrolet mean?

The C1225 code indicates "Left Front Excessive Wheel Speed Variation," meaning the ABS system detects an irregular speed signal from the left front wheel.

2. What are common symptoms of the C1225 code on a Chevrolet?

Common symptoms include the ABS or traction control light turning on, decreased braking performance, and possible pulsation in the brake pedal.

3. What causes the C1225 code in a Chevrolet?

The code can be caused by a faulty wheel speed sensor, damaged wiring, a dirty or damaged tone ring, or issues with the ABS module.

4. Can I continue driving my Chevrolet with the C1225 code?

While the vehicle may still be drivable, the ABS and traction control systems may not function properly, increasing the risk of skidding or loss of control in slippery conditions.

5. How do I diagnose the C1225 code on my Chevrolet?

Start by inspecting the left front wheel speed sensor and its wiring for damage or disconnections. Use a scan tool to monitor the wheel speed sensor readings and look for discrepancies.

6. Can a dirty wheel hub cause the C1225 code in a Chevrolet?

Yes, dirt or debris on the tone ring or wheel hub can interfere with the wheel speed sensor's signal, leading to this code.

7. How do I fix the C1225 code on a Chevrolet?

Repairs may include cleaning or replacing the wheel speed sensor, repairing damaged wiring, replacing the tone ring, or addressing issues in the ABS module.

8. How much does it cost to fix the C1225 code on a Chevrolet?

The cost depends on the issue. Replacing a wheel speed sensor typically costs $100–$300, while ABS module repairs can be more expensive.

9. Can a faulty ABS module trigger the C1225 code on a Chevrolet?

Yes, a malfunctioning ABS module can cause incorrect readings or fail to process wheel speed data, resulting in this code.

10. Do I need special tools to fix the C1225 code on a Chevrolet?

You may need a scan tool capable of reading ABS codes, a multimeter for testing electrical connections, and basic tools for removing and replacing components.

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