C0139 Cadillac 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 Cadillac 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 Cadillac Description
What are the Possible Causes of the DTC C0139 Cadillac?
- 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 Cadillac?
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 Cadillac 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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Frequently Asked Questions about C0139 Cadillac Code
1. What does the OBDII code C0139 mean in a Cadillac?
C0139 indicates an issue with the Base Brake System Pressure Circuit/Sensor, specifically that it is reporting a high signal or voltage.
2. What are the common symptoms of code C0139 in a Cadillac?
Common symptoms include the ABS warning light turning on, reduced braking performance, or the traction control system becoming disabled.
3. What causes the C0139 code to appear in a Cadillac?
Potential causes include a faulty brake pressure sensor, damaged wiring or connectors, an ABS module issue, or a hydraulic brake pressure problem.
4. Can I drive my Cadillac with the C0139 code active?
While the vehicle may still be drivable, it's not recommended as braking performance or safety features like ABS and traction control could be compromised.
5. How is the C0139 code diagnosed in a Cadillac?
A technician will use a scan tool to read the code, inspect the brake pressure sensor, check for damaged wiring or connectors, and test the ABS module.
6. How do you fix the C0139 code on a Cadillac?
Repairs may involve replacing the brake pressure sensor, repairing damaged wiring, cleaning connectors, or reprogramming or replacing the ABS module.
7. How much does it cost to fix the C0139 code on a Cadillac?
The repair cost varies depending on the issue but typically ranges from $150 to $500, with parts and labor included.
8. Can a low brake fluid level cause the C0139 code?
While low brake fluid may not directly trigger this code, it can lead to other brake system issues, so checking and maintaining proper fluid levels is important.
9. Will clearing the C0139 code fix the problem?
Clearing the code without addressing the underlying issue will likely result in the code returning, as the root cause must be resolved.
10. Is the C0139 code specific to Cadillacs?
No, the C0139 code can appear in other GM vehicles, but the exact symptoms and repairs may vary by make and model.
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