AutoCodes – Generic – C0281

C0281 Code - EBCM Detects Open Or Shorted Brake Switch Or Circuit

Quick Answer

The stop lamp switch signal informs the Electronic Brake Control Module (EBCM) when the brake pedal is pressed. Common causes include Faulty Brake Light Switch, Brake Light Switch harness is open or shorted, Brake Light Switch 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: C0281 indicates EBCM Detects Open Or Shorted Brake Switch Or Circuit.
Common causes: Common causes include Faulty Brake Light Switch, Brake Light Switch harness is open or shorted, Brake Light Switch 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 12,001

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 Jun 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0281 Description

The stop lamp switch signal informs the Electronic Brake Control Module (EBCM) when the brake pedal is pressed. The EBCM detects an open or shorted brake switch or brake switch circuit.

OBDII Code C0281 - EBCM Detects Open Or Shorted Brake Switch Or Circuit - AutoCodes.com — C0281 Code - EBCM Detects Open Or Shorted Brake Switch Or Circuit

What does this mean?

What are the Possible Causes of the DTC C0281?

Faulty Brake Light Switch
Brake Light Switch harness is open or shorted
Brake Light Switch circuit poor electrical connection

How to Fix the DTC C0281?

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 C0281 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 C0281 code?

Need more information on how to fix the C0281 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0281 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0281 Buick — EBCM Detects Open Or Shorted Brake Switch Or Circuit
C0281 Cadillac — EBCM Detects Open Or Shorted Brake Switch Or Circuit
C0281 Chevrolet — EBCM Detects Open Or Shorted Brake Switch Or Circuit
C0281 GMC — EBCM Detects Open Or Shorted Brake Switch Or Circuit

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 C0281 Code

Q: What does the OBDII code C0281 mean?

1. **A:** Code C0281 indicates that the Electronic Brake Control Module (EBCM) has detected an open or short in the brake switch or its circuit. 2.

Q: What are common symptoms of code C0281?

**A:** Symptoms may include the ABS warning light turning on, cruise control not functioning, and unresponsive brake lights. 3.

Q: What causes the C0281 code to appear?

**A:** Common causes include a faulty brake switch, damaged wiring or connectors in the brake circuit, or a malfunctioning EBCM. 4.

Q: Can I still drive my vehicle with the C0281 code?

**A:** While the vehicle may still be drivable, safety features like ABS and cruise control may not work properly, so repairs should be made promptly. 5.

Q: How is the C0281 code diagnosed?

**A:** A mechanic will use a scan tool to verify the code, inspect the brake switch and wiring for damage, and test the circuit for continuity. 6.

Q: How do I fix the C0281 code?

**A:** Repairs may include replacing the faulty brake switch, repairing or replacing damaged wiring, or addressing issues with the EBCM. 7.

Q: Can a faulty brake light cause the C0281 code?

**A:** Yes, a malfunctioning brake light or its circuit can trigger the code if it affects the brake switch signal. 8.

Q: Is the C0281 code related to the ABS system?

**A:** Yes, the code is tied to the ABS system as the EBCM relies on the brake switch signal for proper operation. 9.

Q: How much does it cost to repair the C0281 code?

**A:** Repair costs vary but typically range from $100 to $300, depending on whether the brake switch, wiring, or EBCM needs repair or replacement. 10.

Q: Can I clear the C0281 code without fixing the issue?

**A:** Clearing the code without addressing the root cause will likely result in the code returning, and safety systems may remain impaired.