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Code C0514

Symptoms

• ABS warning light on

• Traction control light on

• Inconsistent braking performance

Common Causes

• Faulty right rear wheel speed sensor

• Damaged wiring or connectors

• Corroded or loose electrical connections

Glossary

ABS: Anti-lock Braking System

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Related Codes

• C0515

• C0561

Laymans terms

The car's computer is having trouble reading the speed of the right rear wheel because the sensor is not working properly.

Explanation

This code indicates that the signal from the right rear wheel speed sensor is lower than expected, which could mean an electrical issue or sensor malfunction.

Technical description

The C0514 code is triggered when the ABS (Anti-lock Braking System) module detects a low voltage signal from the right rear wheel speed sensor. This sensor is responsible for monitoring the rotational speed of the wheel and sending this information to the ABS module to help control braking performance.

Diagnosis steps

• Inspect the right rear wheel speed sensor for damage.

• Check the wiring and connectors for corrosion or damage.

• Test the sensor's voltage output with a multimeter.

Repair procedures

• Replace the right rear wheel speed sensor if faulty.

• Repair or replace damaged wiring or connectors.

• Clean and secure any corroded or loose connections.

Tools required

• Multimeter

• Socket set

• Jack and jack stands

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• GMC Sierra

• Cadillac Escalade

Preventive measures

• Regularly inspect wheel speed sensors and wiring.

• Keep electrical connections clean and secure.

• Avoid driving through deep water or mud.

Error code type

Sensor Issue

User experience recommendations

• Have a professional inspect the ABS system if the warning light is on.

• Avoid harsh braking until the issue is resolved.

Warranty information

Check with your vehicle manufacturer for warranty coverage on ABS components.

Historical data

Wheel speed sensor issues have been common in vehicles with ABS systems, often due to environmental factors affecting the sensors.

Urgency level

Moderate – While the vehicle can still be driven, braking performance may be compromised.

Legal and safety notice

Driving with a malfunctioning ABS system can increase the risk of accidents. It is advisable to address this issue promptly.

Testing conditions

• Vehicle stationary

• Ignition on, engine off

Component location

The right rear wheel speed sensor is located near the wheel hub of the right rear wheel.

FAQs

Q: Can I drive with a C0514 code?
A: While you can drive with this code, it's not recommended as it may affect braking performance.

Q: How do I reset the ABS light after fixing the issue?
A: The ABS light should reset itself after the repair. If not, a scan tool may be needed to clear the code.

Last updated: Jun 8, 2026 • Source: internal database
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