AutoCodes – GMC – C0223 GMC

C0223 GMC Code - Erratic Right Front Speed Sensor

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
C0223 GMC indicates Erratic Right Front Speed Sensor.
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.
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Code Popularity 20,382
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 09, 2020
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Code C0223 GMC 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 C0223 GMC - Erratic Right Front Speed Sensor - AutoCodes.com
C0223 GMC Code - Erratic Right Front Speed Sensor

What are the Possible Causes of the DTC C0223 GMC?

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

How to Fix the DTC C0223 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 C0223 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 C0223 GMC Code

1. What does the OBDII code C0223 mean on a GMC vehicle?

C0223 indicates an issue with the right front wheel speed sensor, specifically an erratic or intermittent signal detected by the ABS module.

2. What are the common symptoms of code C0223 in a GMC?

Symptoms may include the ABS warning light illuminated, reduced ABS functionality, traction control deactivation, or pulsating brakes during normal operation.

3. What causes the C0223 code to appear in a GMC vehicle?

Common causes include a faulty right front wheel speed sensor, damaged wiring or connectors, debris on the sensor or tone ring, or a malfunctioning ABS module.

4. Can I still drive my GMC with the C0223 code active?

While the vehicle may still be drivable, the ABS and traction control systems may not function properly, increasing the risk of skidding during hard braking.

5. How do I diagnose the C0223 code in a GMC?

Start by visually inspecting the right front wheel speed sensor, its wiring, and connectors. Use a scan tool to verify the sensor signal, and check for debris or damage to the tone ring.

6. How do I fix the C0223 code on my GMC?

Repairs may include cleaning the speed sensor and tone ring, repairing damaged wiring, or replacing the faulty sensor. In rare cases, the ABS module may need to be replaced.

7. What tools are needed to diagnose and repair the C0223 code?

A scan tool capable of reading ABS codes, a multimeter for testing wiring and sensor resistance, and basic hand tools for removing and inspecting the sensor are typically needed.

8. How much does it cost to fix the C0223 code on a GMC?

Repair costs vary but typically range from $50 to $300, depending on whether the sensor, wiring, or ABS module needs repair or replacement.

9. Can a dirty wheel speed sensor cause the C0223 code?

Yes, dirt, debris, or corrosion on the sensor or tone ring can disrupt the signal and trigger the code.

10. Does clearing the C0223 code fix the problem?

Clearing the code will reset the warning light temporarily, but the underlying issue must be resolved to prevent the code from returning.

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