AutoCodes – Suzuki – C1021 Suzuki

C1021 Suzuki Code - Right Front Wheel Speed Sensor Circuit

Quick Answer

The Anti-Lock Brake System (ABS) control module monitors the voltage at the positive (+) terminal of each sensor while the ignition switch is ON. Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection. 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
C1021 Suzuki indicates Right Front Wheel Speed Sensor Circuit.
Common causes
Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 15,104
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 06, 2020
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Code C1021 Suzuki Description

The Anti-Lock Brake System (ABS) control module monitors the voltage at the positive (+) terminal of each sensor while the ignition switch is ON. When the voltage is not within the specified range, an applicable Diagnostic Trouble Code (DTC) will be set. Also, when the ABS control module detects a sensor which outputs an abnormal signal while comparing signals from wheel speed sensors, an applicable DTC will be set.
OBDII Code C1021 Suzuki - Right Front Wheel Speed Sensor Circuit - AutoCodes.com
C1021 Suzuki Code - Right Front Wheel Speed Sensor Circuit

What are the Possible Causes of the DTC C1021 Suzuki?

  • Faulty Right Front Wheel Speed Sensor
  • Right Front Wheel Speed Sensor harness is open or shorted
  • Right Front Wheel Speed Sensor circuit poor electrical connection

How to Fix the DTC C1021 Suzuki?

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 C1021 Suzuki 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 C1021 Suzuki code?

Need more information on how to fix the C1021 Suzuki code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1021 Suzuki code diagnosed by a professional: Find a repair shop in your area

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 C1021 Suzuki Code

1. What are the common symptoms of OBDII code C1021 in a Suzuki related to the right front wheel speed sensor circuit?

The common symptoms include ABS warning light illuminated on the dashboard, traction control system failure, and potential loss of ABS functionality.

2. What are some possible causes of OBDII code C1021 in a Suzuki?

Possible causes include a faulty right front wheel speed sensor, damaged sensor wiring or connectors, corrosion in the sensor circuit, or issues with the ABS control module.

3. How can I diagnose the right front wheel speed sensor circuit issue causing OBDII code C1021 in my Suzuki?

You can diagnose the issue by visually inspecting the sensor and wiring for damage, testing the sensor's electrical resistance, checking the connector for corrosion, and using a scan tool to monitor sensor data.

4. Can I still drive my Suzuki with OBDII code C1021 related to the right front wheel speed sensor circuit?

It is not recommended to drive the vehicle with this code present, as it may affect the ABS system's functionality and compromise safety during braking and stability control.

5. How can I repair the right front wheel speed sensor circuit issue causing OBDII code C1021 in my Suzuki?

Repair options include replacing the right front wheel speed sensor, repairing or replacing damaged wiring or connectors, cleaning corrosion from the sensor circuit, and resetting the ABS system codes.

6. Will resetting the OBDII code C1021 in my Suzuki clear the issue with the right front wheel speed sensor circuit?

Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code. Proper diagnosis and repair are necessary to resolve the problem.

7. Is it possible for a DIY enthusiast to fix the OBDII code C1021 related to the right front wheel speed sensor circuit in a Suzuki?

Depending on your automotive repair skills and tools, it may be possible to address this issue yourself by following diagnostic procedures and replacing components as needed. However, professional help is recommended for accurate diagnosis and repair.

8. How much does it typically cost to repair the right front wheel speed sensor circuit issue causing OBDII code C1021 in a Suzuki?

The cost can vary depending on the specific problem, parts needed, and labor rates in your area. Generally, replacing a wheel speed sensor or repairing wiring can range from $100 to $300 or more.

9. Can OBDII code C1021 in a Suzuki be triggered by factors other than a faulty right front wheel speed sensor circuit?

Yes, other factors like ABS module issues, faulty wiring connections, or sensor circuit corrosion can also trigger this code, so a comprehensive diagnostic approach is necessary for an accurate repair.

10. How urgent is it to address OBDII code C1021 in a Suzuki related to the right front wheel speed sensor circuit?

It is important to address this code promptly to ensure the proper functioning of the ABS system and maintain safe driving conditions. Ignoring the issue can lead to potential safety risks and further damage to the vehicle.

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