C0139 Buick 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 Buick 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.
Code C0139 Buick Description
What are the Possible Causes of the DTC C0139 Buick?
- 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 Buick?
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 Buick 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 C0139 Buick code?
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Frequently Asked Questions about C0139 Buick Code
1. What are the common symptoms of OBDII code C0139 in a Buick related to the Base Brake System Pressure Circuit/Sensor High?
The common symptoms include the illumination of the ABS warning light on the dashboard, decreased brake performance, and potential issues with the vehicle's stability control system.
2. What are the possible causes of OBDII code C0139 in a Buick?
Possible causes of this code include a faulty brake pressure sensor, issues with the brake pressure sensor circuit, damaged wiring or connectors, or a malfunctioning electronic control unit (ECU).
3. How can I diagnose the OBDII code C0139 in a Buick?
Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific trouble code, checking the brake pressure sensor for proper operation, inspecting the wiring and connectors for any damage, and conducting a thorough examination of the base brake system.
4. What are some repair tips for addressing OBDII code C0139 in a Buick?
Repair tips may include replacing the faulty brake pressure sensor, repairing any damaged wiring or connectors, resetting the ECU to clear the code, and ensuring proper calibration of the base brake system components.
5. Is it safe to continue driving my Buick with OBDII code C0139 present?
It is not recommended to continue driving the vehicle with this code active, as it can affect the performance of the base brake system and compromise overall safety. It is best to address the issue promptly.
6. Can OBDII code C0139 in a Buick be reset without repairing the underlying issue?
While it is possible to clear the code temporarily by resetting the ECU, the underlying issue causing the code will persist until properly diagnosed and repaired. It is important to address the root cause to prevent further problems.
7. How much does it typically cost to repair OBDII code C0139 in a Buick?
The cost of repairing this code can vary depending on the specific cause of the issue, the extent of the damage, and labor rates in your area. It is advisable to consult with a professional mechanic for an accurate estimate.
8. Can weather conditions or driving habits trigger OBDII code C0139 in a Buick?
Extreme weather conditions or aggressive driving habits can potentially contribute to triggering this code, especially if they put additional stress on the base brake system components. It is important to drive responsibly to avoid issues.
9. Are there any preventive measures I can take to avoid OBDII code C0139 in my Buick?
Regular maintenance and inspections of the base brake system, including checking the brake fluid level and condition, can help prevent issues that may lead to this code. Additionally, driving cautiously and avoiding harsh braking can also be beneficial.
10. How long does it take to repair OBDII code C0139 in a Buick?
The repair time for this code can vary depending on the specific cause and the complexity of the repair. It may take a few hours to a full day to diagnose, repair, and test the base brake system components to ensure the issue is resolved effectively.
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