AutoCodes – GMC – C0281 GMC

C0281 GMC 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 GMC 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 6,469

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

What does this mean?

What are the Possible Causes of the DTC C0281 GMC?

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 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 C0281 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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Need Help with the Code?

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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 C0281 GMC Code

1. What are the common symptoms of OBDII code C0281 in a GMC vehicle?

- Common symptoms include the traction control and stability control lights illuminating on the dashboard, difficulty engaging the cruise control, and potential loss of traction control functionality.

2. What does the OBDII code C0281 in a GMC indicate?

- This code indicates that the Electronic Brake Control Module (EBCM) has detected an open or shorted brake switch or circuit, affecting the proper operation of the vehicle's brake system.

3. What are the possible causes of OBDII code C0281 in a GMC?

- Possible causes include a faulty brake switch, damaged wiring or connectors in the brake switch circuit, a malfunctioning EBCM, or issues with the brake control module programming.

4. How can I diagnose the source of OBDII code C0281 in my GMC vehicle?

- A thorough inspection of the brake switch, wiring, and connectors is recommended. Testing the brake switch for proper operation and checking for any visible damage to the circuit can help pinpoint the issue.

5. Is it safe to continue driving with OBDII code C0281 present in a GMC?

- While the vehicle may still be drivable, it is recommended to address the issue promptly to ensure the proper operation of the brake system and related safety features.

6. Can I reset OBDII code C0281 in a GMC by clearing the fault codes?

- Clearing the fault codes may temporarily remove the warning lights, but the underlying issue causing the code will need to be resolved to prevent the code from reoccurring.

7. How can I repair OBDII code C0281 in my GMC?

- Repair may involve replacing the brake switch, repairing damaged wiring or connectors, reprogramming the EBCM, or seeking professional diagnostic assistance for a comprehensive solution.

8. Are there any DIY tips for addressing OBDII code C0281 in a GMC?

- DIY tips may include visually inspecting the brake switch and wiring for damage, checking and cleaning connectors, and ensuring all components are securely in place.

9. Can a malfunctioning brake switch cause other issues besides triggering OBDII code C0281 in a GMC?

- Yes, a faulty brake switch can potentially cause other problems such as issues with brake lights, cruise control functionality, and overall brake system performance.

10. How much does it typically cost to repair OBDII code C0281 in a GMC at a professional service center?

- Repair costs can vary depending on the specific cause of the issue, but the average cost for addressing OBDII code C0281 may range from $100 to $300, including parts and labor.