AutoCodes – Cadillac – C0221 Cadillac

C0221 Cadillac Code - Right Front Speed Sensor or Circuit Open

Quick Answer

As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal. Common causes include Faulty Right Front Speed Sensor, Right Front Speed Sensor harness is open or shorted, Right Front 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: C0221 Cadillac indicates Right Front Speed Sensor or Circuit Open.
Common causes: Common causes include Faulty Right Front Speed Sensor, Right Front Speed Sensor harness is open or shorted, Right Front 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 7,160

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 Mar 10, 2021

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C0221 Cadillac Description

As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.

OBDII Code C0221 Cadillac - Right Front Speed Sensor or Circuit Open - AutoCodes.com — C0221 Cadillac Code - Right Front Speed Sensor or Circuit Open

What does this mean?

What are the Possible Causes of the DTC C0221 Cadillac?

Faulty Right Front Speed Sensor
Right Front Speed Sensor harness is open or shorted
Right Front Speed Sensor circuit poor electrical connection
Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C0221 Cadillac?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0221 Cadillac 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 C0221 Cadillac code?

Need more information on how to fix the C0221 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0221 Cadillac 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 C0221 Cadillac Code

1. What does the OBDII code C0221 mean on a Cadillac?

C0221 indicates an issue with the right front wheel speed sensor or its circuit, such as an open or faulty connection.

2. What are the symptoms of a C0221 code on a Cadillac?

Common symptoms include the ABS warning light turning on, reduced or disabled anti-lock braking system functionality, and possible loss of traction control.

3. What causes the C0221 code on a Cadillac?

Potential causes include a damaged or faulty right front wheel speed sensor, corroded or broken wiring, loose electrical connections, or a malfunctioning ABS module.

4. Can I still drive my Cadillac with a C0221 code?

Yes, but the ABS and traction control systems may not function properly, which could increase the risk of losing control in slippery conditions.

5. How do I diagnose the C0221 code on a Cadillac?

Start by inspecting the right front wheel speed sensor and its wiring for signs of damage, corrosion, or disconnection. Use a multimeter to test the sensor's resistance and continuity.

6. How can I fix the C0221 code on my Cadillac?

Repairs may include replacing the right front wheel speed sensor, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the ABS module if necessary.

7. Is the C0221 code specific to Cadillacs?

No, this code can appear on other vehicles with similar systems, but the diagnosis and repair steps may vary depending on the make and model.

8. How much does it cost to fix the C0221 code on a Cadillac?

Repair costs can range from $100 to $300 for a wheel speed sensor replacement, but additional costs may apply if wiring or ABS module repairs are needed.

9. Can a C0221 code clear itself on a Cadillac?

The code may temporarily clear if the issue is intermittent, but it is likely to return if the underlying problem is not resolved.

10. Will replacing the right front wheel speed sensor always fix the C0221 code?

Not always. If the issue lies with the wiring or ABS module, replacing the sensor alone may not resolve the problem. A thorough diagnosis is essential.