AutoCodes – Chevrolet – C0139 Chevrolet

C0139 Chevrolet Code - Base Brake System Pressure Circuit/Sensor High

Quick Answer

The Electronic Brake Control Module (EBCM) uses an input from 2 brake fluid pressure sensors to enhance ABS braking and vehicle stability if equipped. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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: C0139 Chevrolet indicates Base Brake System Pressure Circuit/Sensor High.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 2,195

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 May 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0139 Chevrolet Description

The Electronic Brake Control Module (EBCM) uses an input from 2 brake fluid pressure sensors to enhance ABS braking and vehicle stability if equipped.

OBDII Code C0139 Chevrolet - Base Brake System Pressure Circuit/Sensor High - AutoCodes.com — C0139 Chevrolet Code - Base Brake System Pressure Circuit/Sensor High

What does this mean?

What are the Possible Causes of the DTC C0139 Chevrolet?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module (EBCM) harness is open or shorted
Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C0139 Chevrolet?

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 C0139 Chevrolet 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 more information on how to fix the C0139 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0139 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 C0139 Chevrolet Code

1. What are the common symptoms of OBDII code C0139 in a Chevrolet related to the Base Brake System Pressure Circuit/Sensor High?

- The common symptoms include the illumination of the "Brake System Warning Light" on the dashboard, decreased brake performance, and potential issues with the ABS system.

2. What are the possible causes of OBDII code C0139 in a Chevrolet?

- The possible causes of this code include a faulty brake pressure sensor, a malfunctioning brake pressure circuit, wiring issues, or a problem with the ABS control module.

3. How can I diagnose the OBDII code C0139 in my Chevrolet?

- Diagnosis involves using a professional OBDII scanner to retrieve the fault code, inspecting the brake pressure sensor and related wiring, and performing a brake system pressure test.

4. Is it safe to drive my Chevrolet with OBDII code C0139 present?

- It is not recommended to drive the vehicle with this code active, as it may affect the proper functioning of the brake system and compromise safety.

5. Can I reset the OBDII code C0139 in my Chevrolet without fixing the issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the underlying problem to prevent further brake system issues.

6. How can I repair OBDII code C0139 in my Chevrolet?

- Repair typically involves replacing the faulty brake pressure sensor, repairing damaged wiring, or addressing issues with the ABS control module.

7. Are there any DIY tips for fixing OBDII code C0139 in a Chevrolet?

- DIY tips include checking and cleaning the connections to the brake pressure sensor, inspecting the brake fluid level, and ensuring there are no leaks in the brake system.

8. Will fixing OBDII code C0139 in my Chevrolet be expensive?

- The cost of repair can vary depending on the exact cause of the code, but it is advisable to address the issue promptly to prevent further damage and ensure safety.

9. How can I prevent OBDII code C0139 from reoccurring in my Chevrolet?

- Regular maintenance of the brake system, including checking brake fluid levels and inspecting sensors, can help prevent the recurrence of this code.

10. Can a mechanic help me diagnose and repair OBDII code C0139 in my Chevrolet?

- Yes, a qualified mechanic with experience in diagnosing and repairing ABS and brake system issues can help you address OBDII code C0139 efficiently and effectively.