AutoCodes – Generic – C0280

C0280 Code - Stability System Active Too Long

Quick Answer

The solenoid valves are integral parts of the brake pressure modulator. Common causes include Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV), Brake Pressure Modulator Valve harness is open or shorted, Brake Pressure Modulator Valve 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: C0280 indicates Stability System Active Too Long.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV), Brake Pressure Modulator Valve harness is open or shorted, Brake Pressure Modulator Valve 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 4,284

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 Jul 05, 2023

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

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

Code C0280 Description

The solenoid valves are integral parts of the brake pressure modulator. The brake pressure modulator contains an isolation solenoid valve and a dump solenoid valve for each wheel. A traction/stability control supply solenoid valve and an isolation solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, the traction control, or the stability control operation is required the Electronic Brake Control Module (EBCM) turns the required solenoid ON. The Diagnostic Trouble Code (DTC) will be set due to the extended operation of the ABS, the traction control, or the stability control.

OBDII Code C0280 - Stability System Active Too Long - AutoCodes.com — C0280 Code - Stability System Active Too Long

What does this mean?

What are the Possible Causes of the DTC C0280?

Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV)
Brake Pressure Modulator Valve harness is open or shorted
Brake Pressure Modulator Valve circuit poor electrical connection

How to Fix the DTC C0280?

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 C0280 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 C0280 code?

Need more information on how to fix the C0280 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0280 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0280 Buick — Stability System Active Too Long
C0280 Cadillac — Stability System Active Too Long
C0280 Chevrolet — Stability System Active Too Long
C0280 GMC — Stability System Active Too Long

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 C0280 Code

What does the OBDII code C0280 mean?

C0280 indicates that the vehicle's stability control system has been active for an extended period, suggesting potential issues with the system's sensors, wiring, or components.

What are common symptoms of the C0280 code?

Common symptoms include the illumination of the ABS or traction control warning lights, reduced vehicle stability, and changes in handling, particularly in slippery conditions.

What could cause the C0280 code to trigger?

Possible causes include faulty wheel speed sensors, damaged wiring, malfunctioning ABS control module, or issues with the stability control system itself.

Can I drive my vehicle with the C0280 code?

While you can technically drive the vehicle, it's not recommended, as it may compromise handling and safety, especially in adverse conditions.

How can I diagnose the C0280 code?

Start by using an OBDII scanner to confirm the code and check for additional codes. Inspect wheel speed sensors, wiring, and connectors for damage or corrosion.

What repairs might be needed for a C0280 code?

Repairs may include replacing faulty wheel speed sensors, repairing damaged wiring, or replacing the ABS control module, depending on the underlying issue.

Is the C0280 code related to the brake system?

Yes, the C0280 code is related to the stability control system, which often works in conjunction with the ABS and brake systems to maintain vehicle stability.

How can I prevent the C0280 code from occurring?

Regular vehicle maintenance, including inspections of the brake and stability control systems, as well as ensuring sensors and wiring are in good condition, can help prevent this code.

What should I do if the C0280 code keeps coming back after repairs?

If the code persists, further diagnostic testing may be required to identify underlying issues, such as faults in the ABS module or other related components.